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Return to Reality:Speculative Design of Interaction Ritual Chains and Exploration of Alone Together
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作者 Chuwen Xu 《Journal of Contemporary Educational Research》 2024年第5期263-269,共7页
“Alone together”is an ever-changing“wicked problem.”In this research and practice,the author tries to combine experience design,referring to the theory of“interaction ritual chain theory,”and creatively add inte... “Alone together”is an ever-changing“wicked problem.”In this research and practice,the author tries to combine experience design,referring to the theory of“interaction ritual chain theory,”and creatively add interactive experience to discursive works,so that the audience can think between the real and the virtual. 展开更多
关键词 Speculative design interaction ritual chain Alone together Installation art
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One-dimensional Chain Dibenzo-18-crown-6 Complex: [K(DB18-C-6)]_2[Pt(SCN)_6]·2H_2O·C_2H_4Cl_2 Assembled by Cation-π Interactions 被引量:1
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作者 ZHUYue-hua DUMao-xi +2 位作者 LIDa-cheng WANGDa-qi DOUJian-min 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2005年第1期123-126,共4页
关键词 one-dimensional chain Crown ether complex Cation-π interactions Synthesis and crystal structure
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Influence of Dzyaloshinskii-Moriya and Kaplan-Shekhtman-Entinwohlman-Aharony superexchange interactions on ground state properties of the one-dimensional spin-Peilers model in open chain
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作者 刘海莲 黄仙山 +1 位作者 王治国 石云龙 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第11期637-640,共4页
The effects of the Dzyaloshinskii Moriya (DM) and the Kaplan-Shekhtman-Entinwohlman-Aharony (KSEA) superexchange interactions on the ground state properties of the one-dimensional spin-Peilers system in open chain... The effects of the Dzyaloshinskii Moriya (DM) and the Kaplan-Shekhtman-Entinwohlman-Aharony (KSEA) superexchange interactions on the ground state properties of the one-dimensional spin-Peilers system in open chain are studied by using the Lanczos numerical method. The study concentrates mainly on the influence of systemic dimerisation in open chain. The results show that systemic ground state energy density varies with dimerisation parameter 5 in different DM interactions, and there exists a special point 5c where the DM interaction has no influence on the systemic dimerisation, no matter whether the DM interaction is relative or irrelative to systemic dimerisation (η= 1 or η=0). The KSEA interaction has no fixed special point, but the points of intersection are dense relatively in a certain numberical value range, and sparse in other numberical value ranges. So we can conclude that the antisymmetric anisotropy DM interaction differs from the symmetric anisotropy KSEA interaction, but they are analogous in the sense of the influence of systemic dimerisation in open chain. 展开更多
关键词 DIMERISATION Dzyaloshinskii-Moriya interaction Kaplan-Shekhtman-Entinwohlman Aharony interaction open chain
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One-dimensional Chain Topology in [Ag(C_6H_6NCl)_2](ClO_4), Generated through Weak Interaction between Molecules
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作者 孙道峰 曹荣 +2 位作者 梁玉仓 洪茂椿 苏伟平 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2001年第3期165-167,共3页
The mononuclear complex [Ag(C6H6NCl)2](ClO() has been prepared and structurally analyzed by single-crystal X-ray diffraction. The complex crystallizes in the monoclinic system, space group C2/c with unit cell paramete... The mononuclear complex [Ag(C6H6NCl)2](ClO() has been prepared and structurally analyzed by single-crystal X-ray diffraction. The complex crystallizes in the monoclinic system, space group C2/c with unit cell parameters: a=15.5314(2), b=8.0247(8), c=15.3701(2)?.β=118.832(2)°, V=1678.2(3)?3, Z=4, Mr=462.46, Dc=1.830Mg/m3, F(000)=912, μ(MoKα) = 1.694cm-1. The final R and wR are 0.0472 and 0.1272 for 1484 observed reflections with I≥3σ(I). The Ag atom is coordinated by two nitrogen atoms of 4-chloromethyl-pyridine in a linear coordination geometry. Each molecule is further linked by the weak interaction between the Cl and Ag atoms to form a one-dimensional chain structure with Ag-Cl distance of 3.240?. 展开更多
关键词 MONONUCLEAR linear weak interaction one-dimension
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Topologically protected edge gap solitons of interacting Bosons in one-dimensional superlattices
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作者 Xi-Hua Guo Tian-Fu Xu Cheng-Shi Liu 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第6期173-178,共6页
We comprehensively investigate the nontrivial states of an interacting Bose system in a cosine potential under the open boundary condition. Our results show that there exists a kind of stable localized state: edge ga... We comprehensively investigate the nontrivial states of an interacting Bose system in a cosine potential under the open boundary condition. Our results show that there exists a kind of stable localized state: edge gap solitons. We argue that the states originate from the eigenstates of independent edge parabolas. In particular, the edge gap solitons exhibit a nonzero topological-invariant behavior. The topological nature is due to the connection of the present model to the quantized adiabatic particle transport problem. In addition, the composition relations between the gap solitons and the extended states are also discussed. 展开更多
关键词 one-dimensional optical superlattices interacting Boses edge gap solitons topological invariant
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Dynamical Stability of Gap Soliton of One-Dimensional Condensate in Optical Lattices with Strong Interatomic Interaction 被引量:2
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作者 王登龙 颜晓红 王凤姣 《Chinese Physics Letters》 SCIE CAS CSCD 2007年第7期1817-1820,共4页
By developing the multiple scales method, we analytically study the dynamics properties of gap soliton of Bose- Einstein condensate in optical lattices. It is shown that the gap soliton will appear at Brillouin zone e... By developing the multiple scales method, we analytically study the dynamics properties of gap soliton of Bose- Einstein condensate in optical lattices. It is shown that the gap soliton will appear at Brillouin zone edge of linear band spectrum of the condensates when the interatomic interaction strength is larger than the lattice depth. Moreover, the density of gap soliton starts to be relatively small, while it increases with time and becomes stable. 展开更多
关键词 BOSE-EINSTEIN CONDENSATE LONG-RANGE interactION ENVELOPE chain
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A New One-dimensional Chain Compound Constructed by {Mo_8O_(28)} units via Corner-sharing 被引量:1
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作者 YUYa-Qin YANGWen-Bin WUChuan-De LUCan-Zhong 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2005年第2期214-218,共5页
The title compound, {(H3O)4(NH4)4[Mo8O28]?2H2O}n 1, has been synthesized from the reaction of Zn(OAc)2 and (NH4)6Mo7O24?4H2O in aqueous solution at ambient tempe- rature, and its crystal structure was determined by ... The title compound, {(H3O)4(NH4)4[Mo8O28]?2H2O}n 1, has been synthesized from the reaction of Zn(OAc)2 and (NH4)6Mo7O24?4H2O in aqueous solution at ambient tempe- rature, and its crystal structure was determined by X-ray single-crystal analysis with the following crystallographic data: monoclinic system, space group P21/n, a = 9.5234(6), b = 11.3235(8), c = 14.8812(10) ?, β = 107.467(2)o, V = 1530.77(18) ?3, Z = 4, F(000) = 1336, μ = 3.293 mm-1 and Dc = 3.037 g/cm3. The final R = 0.0619 for 2691 observed reflections (I > 2σ(I)). X-ray crys- tal structure analysis showed that the novel one-dimensional chain compound is built up by basic {Mo8O28} units via single μ2-O, and such chains are further linked into a three-dimensional net- work by hydrogen bonds. 展开更多
关键词 polyoxomolybdate octamolybdate one-dimensional chain
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Implications of The Gift of the Magi for Moral Education of Teenagers From the Perspective of Interaction Ritual Chains
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作者 Chen Linlin Wang Yuqing 《Contemporary Social Sciences》 2023年第4期133-141,共9页
Adolescence is a pivotal moment in shaping one’s character and holds great implications for one’s values and personal growth.The Gift of the Magi by O.Henry portrays how an ordinary young couple in difficult financi... Adolescence is a pivotal moment in shaping one’s character and holds great implications for one’s values and personal growth.The Gift of the Magi by O.Henry portrays how an ordinary young couple in difficult financial circumstances managed to show their love for each other,eulogizing truth,goodness,and beauty in humanity.We conducted a thorough examination of the significance of moral values conveyed in The Gift of the Magi for teenager education using the“situation-emotion-symbol”model that is based on Randall Collins’theory of interaction ritual chains in order to establish an interaction ritual chain model for moral education of teenagers.Our study reveals that situated cognition is useful in constructing the focus of attention for the moral education of teenagers;that shared emotion is the driving force for achieving moral education of teenagers;and that symbolic connections help teenagers put the virtues they’ve learned from The Gift of the Magi into action and provides effective measures that can significantly contribute to the cultivation and implementation of moral education among teenagers. 展开更多
关键词 interaction ritual chains The Gift of the Magi moral education of teenagers situated cognition shared emotions symbolic connections
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Synthesis, structure, and properties of Ba9Co3Se(15) with one-dimensional spin chains
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作者 Lei Duan Xian-Cheng Wang +6 位作者 Jun Zhang Jian-Fa Zhao Li-Peng Cao Wen-Min Li Run-Ze Yu Zheng Deng Chang-Qing Jin 《Chinese Physics B》 SCIE EI CAS CSCD 2020年第3期330-334,共5页
A new compound with one-dimensional spin chains, Ba9Co3Se(15), was synthesized under high pressure and high temperature conditions and systematically characterized via structural, transport and magnetic measurements. ... A new compound with one-dimensional spin chains, Ba9Co3Se(15), was synthesized under high pressure and high temperature conditions and systematically characterized via structural, transport and magnetic measurements. Ba9Co3Se(15) crystallizes in a hexagonal structure with the space group P-6c2(No. 188) and lattice constants of a = b = 9.6765 ? and c = 18.9562 ?. The structure consists of trimeric face-sharing octahedral CoSe6 chains, which are arranged in a triangular lattice in the ab-plane and separated by Ba atoms. The distance of the nearest neighbor of CoSe6 chains is very large, given by the lattice constant a = 9.6765 ?. The Weiss temperature Tθ associated with the intra-chain coupling strength is about -346 K. However, no long-range magnetic order but a spin glass transition at ~ 3 K has been observed. Our results indicate that the spin glass behavior in Ba9Co3Se(15) mainly arises from the magnetic frustration due to the geometrically frustrated triangular lattice. 展开更多
关键词 one-dimensional chain SPIN GLASS high-pressure
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Explicit forms of zero modes in symmetric interacting Kitaev chain without and with dimerization
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作者 Yiming Wang Zhidan Li Qiang Han 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第6期355-358,共4页
The fermionic and bosonic zero modes of the one-dimensional(1D) interacting Kitaev chain at the symmetric point are unveiled. The many-body structures of the Majorana zero modes in the topological region are given e... The fermionic and bosonic zero modes of the one-dimensional(1D) interacting Kitaev chain at the symmetric point are unveiled. The many-body structures of the Majorana zero modes in the topological region are given explicitly by carrying out a perturbation expansion up to infinite order. We also give the analytic expressions of the bosonic zero modes in the topologically trivial phase. Our results are generalized to the hybrid fermion system comprised of the interacting Kitaev model and the Su–Schrieffer–Heeger(SSH) model, in which we show that these two types of zero modes can coexist in a certain region of its phase diagram. 展开更多
关键词 Majorana zero modes bosonic zero modes interacting Kitaev chain
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The Physical Property of Susceptibility for One-Dimensional Ferrimagnetic Chain with Alternating Spins 1 and 1/2 in Finite Magnetic Field
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作者 XIE Gang HAN Ru-Shan 《Communications in Theoretical Physics》 SCIE CAS CSCD 2001年第11期620-622,共3页
We further calculate the dependence of xT on T in high magnetic fields,where X denotes susceptibility and T is temperature,using our previous research work - Green function's decoupling approximate approach,for th... We further calculate the dependence of xT on T in high magnetic fields,where X denotes susceptibility and T is temperature,using our previous research work - Green function's decoupling approximate approach,for the one-dimensional ferrimagnetic chain with alternating spins 1 and 1/2.We find a linear correlation in certain range of magnetic field between the temperature of xT maximum and the magnetic field.Moreover,we simply analyze its physical meaning by our approach. 展开更多
关键词 one-dimensional spin chain susceptibility ferrimagnetic Green function
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One-dimensional Vanadyl Phosphate Containing the Tancoite-like{Ⅴ^(Ⅳ)O(HPO_4)_2}^(2–)Chain
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作者 WEN Lei HUANG Ya-Xi +6 位作者 SUN Wei LIU Biao HUANG Chun-Zuo MI Jin-Xiao ZHUANG Rong-Chuan TANG Mei-Bo ZHAO Jing-Tai 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2013年第12期1821-1828,共8页
A vanadyl phosphate containing a new member of tancoite-like single chain, (DAPH2)[VIVO(HPO4)2]·xH20 (x ≈ 0.2, DAP = 1,3-diaminopropane, C3H10N2), has been synthesized under hydro(solvo)thermal condition... A vanadyl phosphate containing a new member of tancoite-like single chain, (DAPH2)[VIVO(HPO4)2]·xH20 (x ≈ 0.2, DAP = 1,3-diaminopropane, C3H10N2), has been synthesized under hydro(solvo)thermal conditions. It crystallizes in orthorhombic space group P21212 (No. 18) with a = 7.1730(14), b = 19.252(4), c = 8.6557(17) A, Z= 4, V= 1195.3(4)A3, C3H14.38N2P2VO9.19, Mr = 338.47, Dc = 1.881 g/cm3,μ(MoKa) = 1.138 mm-1 and F(000) = 692. The final full-matrix least-squares refinement converged to R = 0.0408, wR = 0.1046 for 2498 observed reflections with I 〉 2σ(I) and R = 0.0456 and wR = 0.1080 for all data (2750) and S = 1.001. Its one-dimensional 1 structure consists of tancoite-like ∞1 {vIVO(HPO4)2}2- single chains surrounded by DAPH22+ ions and water molecules. The single chain is built from trans-corner-sharing octahedral {VIV= O…VIV} backbone loop-branched by HPO4 groups like staple forming a new member of tancoite single chain. Due to the special coordination of VIVO6, the ∞1 {VO(HPO4)2-} chain adopts a larger M-O-M angle (V-O-V = 135°) than those of tancoite chains reported before. The corner-sharing linear {VIV = O…VIV} chain structure also leads to a one-dimensional weak antiferromagnetic interaction at low temperature. The magnetic measurements confirm the 4+ valence state of vanadium. IR and TG results of the title compound are also discussed. 展开更多
关键词 magnetic properties one-dimensional structure phosphate tancoite-like single chain VANADIUM
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Ground-State Energy and Entropy for One-Dimensional Heisenberg Chain with Alternating D-Term
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作者 Chunhuan Xiang Honglei Wang 《Journal of Applied Mathematics and Physics》 2019年第5期1220-1225,共6页
We study the ground-state information of one-dimensional Heisenberg chain with alternating D-term. Given the ground-state phase diagram, the ground-state energy and the entanglement entropy are obtained by tensor-net ... We study the ground-state information of one-dimensional Heisenberg chain with alternating D-term. Given the ground-state phase diagram, the ground-state energy and the entanglement entropy are obtained by tensor-net work algorithm. The phase transition points are shown in the entanglement entropy figure. The results are agreed with the phase diagram. 展开更多
关键词 GROUND-STATE Energy ENTROPY one-dimensional HEISENBERG chain
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An analysis of the interaction mechanism between the social history of medicine research and health communication from the perspective of mass communication
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作者 Jian-Liang Huang Kun-Lan Zuo Huan Liu 《History & Philosophy of Medicine》 2024年第1期14-18,共5页
The mass communication model and interactive ritual chain theory,which serve as communication paradigms in the new media era,facilitate and enhance the synergy between the fields of social history of medicine and heal... The mass communication model and interactive ritual chain theory,which serve as communication paradigms in the new media era,facilitate and enhance the synergy between the fields of social history of medicine and health communication.This study employs a comprehensive framework based on the five elements of the mass communication model:information source,communication subject,communication object,message content,and post-communication feedback.Additionally,it incorporates the interactive ritual chain theory to examine the evolving dynamics and developmental trajectory of research in the social history of medicine during the new media era.Conclusively,this paper acknowledges the existing interaction gaps in the interaction between health communication and the social history of medicine research while outlining the challenges for fostering collaboration and proposing strategic optimizations for effective integration. 展开更多
关键词 history of medicine health communication mass communication interaction mechanisms interaction ritual chain theory
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One-dimensional Chain Crown Ether Complexes Synthesis and Crystal Structure of ([K(DB18-crown-6)]_(2)(CH_(3)CN))[Pt(SCN)_(4)]
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作者 LI Da-cheng LIU Ying DOU Jian-rain 《聊城大学学报(自然科学版)》 2003年第2期7-8,71,共3页
The complexe{[K(DB18-crown-6)]_(2)(CH_(3)CN)}[Pt(SCN)_(4)]was synthesized and characterized by elemental analysis,IR spectrum and X-ray diffraction analysis.The complexe belongs to monoclinic,space group c2/c with cel... The complexe{[K(DB18-crown-6)]_(2)(CH_(3)CN)}[Pt(SCN)_(4)]was synthesized and characterized by elemental analysis,IR spectrum and X-ray diffraction analysis.The complexe belongs to monoclinic,space group c2/c with cell dimensions,a=2.5904(8),6=1.3653(4),c-1.84706(6)nm,β=123.811(4)°,V=5-339(3)nm^(3),Z=4,.Dcalcd=l.577 g/cm^(3),F(000)=2552,R_(1)=0.051 l,wR_(2)=0.1411.The complexe shows one-dimensional chain of{[K(DB18-crown-6)]+complex cation and[Pt(SCN),i]2-complex anion bridged by N atom of CHaCN moleculer between two[K(DB18-crown-6)]_(2)[Pt(SCN)_(4)]groups respectively. 展开更多
关键词 one-dimensional chain Pt complex DB18-crown-6 crystal structure
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Multifunctional properties of a polar spin chain compound[N(C_(3)H_(7))_(4)][Cu(C_(8)H_(4)NO_(4))]·H_(2)O exhibiting both one-dimensional magnetism and nonlinear optical activity
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作者 Ang Li Yanhong Wang +4 位作者 Haotian Tian Alimujiang Yalikun Yves Journaux Min Luo Hongcheng Lu 《Chinese Chemical Letters》 SCIE CAS CSCD 2024年第2期622-625,共4页
Functional materials with multiple properties are urgent to be explored to reach high requirements for applications nowadays.In this work,a new multifunctional one-dimensional(1D)chain compound[N(C_(3)H_(7))_(4)][Cu(o... Functional materials with multiple properties are urgent to be explored to reach high requirements for applications nowadays.In this work,a new multifunctional one-dimensional(1D)chain compound[N(C_(3)H_(7))_(4)][Cu(ohpma)]·H_(2)O 1(ohpma=deprotonated N-(2-hydoxyphenyl)oxamic acid)exhibiting both 1D antiferromagnetic and nonlinear optical properties,which are both originated from the same polar[Cu(C_(8)H_(4)NO_(4))]magnetic units,has been successfully synthesized by evaporation at room temperature.Bis-polydentate nature of the(ohpma)3−ligand with constrained tridentate and bidentate coordination sites conducts Cu^(2+)ions coordinating in different geometries and forms 1D chains along the c axis,which are further separated by the[N(C_(3)H_(7))_(4)]+cations.And the 1D magnetic chains further exhibit noncentrosymmetric polar arrangement.Nonlinear optical study shows polar compound 1 exhibits a discernible second-harmonic generation(SHG)efficiency and the calculation of the partial density of states indicates that the SHG efficiency of 1 is mainly originated from the polar[Cu(C_(8)H_(4)NO_(4))]magnetic units.Moreover,magnetic susceptibility shows a broad maximum around 70 K with strong intrachain interaction of J/k B=−113.0 K but no long-range order is observed down to 2 K,suggesting that 1 shows a good 1D magnetism.Both good 1D magnetism and SHG activity suggest that 1 could be as a potential multifunctional material,particularly. 展开更多
关键词 Multifunctional properties Magnetic property Nonlinear optical property EVAPORATION one-dimensional chain
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Influence of Charge Density and Chain Length on the Interaction between Organic Anion and Montmorillonite 被引量:3
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作者 郑俊萍 LI Jian +1 位作者 HAO Hui YAO Kangde 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2013年第1期6-11,共6页
Anionic surfantant sodium dodecyl sulfate (SDS), cationic surfactant cetyl trimethyl ammonium bromide (CTAB) and acrylic acid (AA) were introduced as molecular models to study the interaction between montmorillo... Anionic surfantant sodium dodecyl sulfate (SDS), cationic surfactant cetyl trimethyl ammonium bromide (CTAB) and acrylic acid (AA) were introduced as molecular models to study the interaction between montmorillonite and organic molecules with different charge or chain length. The compounds were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and 13C nuclear magnetic resonance (13C NMR). The results show organic anion could interact strongly with montmorillonite, even the molecules could intercalate into the layers of MMT. 展开更多
关键词 chain length charge density interactION montmoriUonitc.
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Spatial Interaction Between the Industrial Undertaking Capacity and Global Value Chain Position of East Asian Countries 被引量:5
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作者 ZHU Binbin CHI Fangyuan DU Lei 《Chinese Geographical Science》 SCIE CSCD 2021年第1期81-92,共12页
A comprehensive understanding of the spatial interaction between the industrial undertaking capability and the position of the global value chain of the 12 East Asian countries is conducive to strengthening regional c... A comprehensive understanding of the spatial interaction between the industrial undertaking capability and the position of the global value chain of the 12 East Asian countries is conducive to strengthening regional cooperation, gaining a say in foreign trade and becoming the dominant player in the global division of labor system. The article reveals the operating rules of the interaction between the industrial undertaking capacity and the global value chain position of East Asian countries by calculating the Global Moran Index(Moran’s I), coupling coordination degree and other indicators. The results show that: in time, the values of industrial undertaking capacity and the positions of global value chain in East Asian countries showed a sustained and stable growth trend, and have a consistent trend of change. Spatially, both of the two indexes had significant positive spatial correlation, with Moran’s I showing an ‘inverted U’pattern, and the spatial aggregation distribution of global value chain position lagged behind the spatial aggregation distribution of industrial undertaking capacity by one year. In terms of spatial coupling coordination, the coupling coordination values of the two indicators show a steady upward trend. Combined with the comparative advantage of each country, this paper provides suggestions for promoting the positions of Chinese and other East Asian industries in the global value chain from the perspectives of enhancing independent innovation capability and upgrading industrial structure. 展开更多
关键词 12 countries East Asian countries industry undertaking capability global value chain position spatial interaction
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Study on Interaction Between Soil and Anchor Chain with Finite Element Method 被引量:1
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作者 李飒 徐保照 +1 位作者 吴蕴洲 李忠刚 《China Ocean Engineering》 SCIE EI CSCD 2016年第6期942-953,共12页
With the development of offshore engineering, deeply embedded anchors are needed to be penetrated to appreciable depth and attached at the pad-eye. The interaction between anchor chain and soil is a very complex proce... With the development of offshore engineering, deeply embedded anchors are needed to be penetrated to appreciable depth and attached at the pad-eye. The interaction between anchor chain and soil is a very complex process and has not been thoroughly understood yet. In this paper, the finite element method (FEM) was used to study the interaction of soil-chain system. Results of the analysis show that when the attachment point is at a shallow depth, the load-development characteristics of the chain from FEM are in good agreement with that from the model tests and theoretical analysis. But with the depth increment, the results are different obviously in different methods. This phenomenon is resulted from a variety of reasons, and the plastic zone around the chain was studied to try finding the mechanism behind it. It could be seen that the plastic zone extended in different modes at different depths of attachment points. The interaction between the soil and anchor chain makes the load acting on the anchor decrease, but the soil disturbed surrounding the chain increases the anchor failure possibility. When the anchor bearing capacity is evaluated, these two factors should be considered properly at the same time. 展开更多
关键词 anchor chain CLAY interactION finite element the load-development characteristics
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Thermal entanglement of the Ising Heisenberg diamond chain with Dzyaloshinskii Moriya interaction 被引量:1
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作者 谯洁 周斌 《Chinese Physics B》 SCIE EI CAS CSCD 2015年第11期110-117,共8页
We investigate the thermal entanglement in a spin-l/2 Ising-Heisenberg diamond chain, in which the vertical Heisen- berg spin dimers alternate with single Ising spins. Due to the fact that the Dzyaloshinskii-Moriya ... We investigate the thermal entanglement in a spin-l/2 Ising-Heisenberg diamond chain, in which the vertical Heisen- berg spin dimers alternate with single Ising spins. Due to the fact that the Dzyaloshinskii-Moriya (DM) interaction con- tributes to unusual and interesting magnetic properties in actual materials, and moreover it plays a significant role in the degree of the entanglement of the Heisenberg quantum spin systems, we focus on the effects of different DM interactions, including Dz and Dx, on the thermal entanglement of the Heisenberg spin dimer. The concurrence, as a measure of spin dimer entanglement, is calculated for different values of exchange interactions, DM interaction, external magnetic field, and temperature. It is found that the critical temperature and the critical magnetic field corresponding to the vanishing of entanglement increase with DM interaction, and the entanglement revival region gets larger by increasing DM interac- tion, thus DM interaction favors the formation of the thermal entanglement. It is observed that different DM interaction parameters (Dz and Dx) have remarkably different influences on the entanglement. Different from the case Dz, there is the non-monotonic variation of the concurrence with temperature in the case Dx, and additionally the DM interaction Dx can induce the entanglement near zero temperature in the case that the antiferromagnetic Ising-type interaction constant is larger than the antiferromagnetic Heisenberg interaction constant. It is also shown that for the same value of DM interaction the critical magnetic field of the case Dx is larger than that of the case Dz. 展开更多
关键词 thermal entanglement Ising-Heisenberg diamond chain Dzyaloshinskii-Moriya interaction
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