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磁场引起的近藤单态退相干机制 被引量：1

The decoherence of Kondo singlet caused by magnetic field
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摘要 磁场作为一个环境能够诱导近藤单态的退相干.我们采用格林函数方法,计算磁场下量子点耦合Aharonov-Bohm环系统的退相干特性,数值结果显示磁场引起的近藤单态的退相干是一个突然的过程. The magnetic field can induce the decoherence of Kondo singlet as an environment. By employing the cluster expansion method, we calculate the differential conductance of a quantum dot coupling to Aharonov - Bohm ring under magnetic field. Our numerical results reveal that the decoherence of Kondo singlet, caused by magnetic field, is an abrupt process.
作者 陈明伦 梁敢 曹艳华 王礼胜 勾庆东 刘宇安 周运志
机构地区 井冈山大学物理系 美国山姆休斯顿州立大学物理系 井冈山大学数学系 井冈山大学电子工程系
出处 《原子与分子物理学报》 CAS CSCD 北大核心 2015年第4期631-634,共4页 Journal of Atomic and Molecular Physics
基金 国家自然科学基金(11164010)
关键词 量子点 Aharonov—Bohm环 退相干 Quantum dot Aharonov - Bohm ring Decoherence
分类号 O561.5 [理学—原子与分子物理]
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参考文献18

  • 1Hewson A C. The Kondo problem to heavy fermions [ M ]. Cambridge: Cambridge University Press, 1993: 100.
  • 2. Gregory S. Experimental - observation of scattering of tunneling electrons by a single magnetic -moment [J]. Phys. Rev. Lett., 1992, 68: 2070.
  • 3Appelbaum J. S - d exchange model of zero - bias tun- neling anomalies [J]. Phys. Rev. Lett., 1966, 17: 91.
  • 4Wyatt A F G. Anomalous densities of states in normal tantalum and niobium [ J ]. Phys. Rev. Lett. , 1964, 13 : 401.
  • 5Ralph D C, Buhrman R A. Kondo- assisted and reso-nant - tunneling via a single charge trap - a realization of the Anderson model out of equilibrium [ J ]. Phys. Rev. Lett. , 1994, 72: 3401.
  • 6Chen M L, Wang S J. Decoherence of Kondo siuglet caused by phase - sensitive detection of Aharonov - Bohm interferometer [J]. Mod. Phys. Lett. B, 2014, 28 : 1450084.
  • 7Chen M L, Chen Z Q. Decoherenee of the Kondo sin- glet caused by Fano resonance [J]. J. At. Mol. Sci., 2014, 5: 156.
  • 8Aleiner I L, Wingreen N S, Meir Y. Dephasing in tun- neling through a quantum dot: The "which path?" in- terferometer [J]. Phys. Rev. Lett. , 1992, 79: 3740.
  • 9Kaminski A, Nazarov Y V, Glazman L I. Suppression of the Kondo effect in a quantum dot by external irradi- ation [J]. Phys. Rev. Lett. , 1999, 83: 384.
  • 10Monreal R C, Flores F. Kondo resonance decoherence caused by an external potential [ J ]. Phys. Rev. B, 2005, 72: 195105.

二级参考文献13

  • 1Nielsen M A. Quantum computation and quantum information[M].{H}Cambridge:Cambridge University Press,2000.12.
  • 2Gregory S. Experimental-observation of scattering of tunneling electrons by a single magnetic-moment[J].{H}Physical Review Letters,1992.2070.
  • 3Appelbaum J. S-d exchange model of zero-bias tunneling anomalies[J].{H}Physical Review Letters,1966.91.
  • 4Wyatt A F G. Anomalous densities of states in normal tantalum + niobium[J].{H}Physical Review Letters,1964.401.
  • 5Ralph D C,Buhrman R A. Kondo-assisted and resonant-tunneling via a single charge trap-a realization of the Anderson model out of equilibrium[J].{H}Physical Review Letters,1994.3401.
  • 6Luo H G,Ying J J. Wang S J Equation of motion approach to the solution of the Anderson model[J].{H}Physical Review B:Condensed Matter,1999.9710.
  • 7Anderson P W. Localized Magnetic States in Metals[J].{H}Physical Review,1961.41.
  • 8Zubarev D N. Double-time green functions in statistical physics[J].{H}USPEKHI FIZICHESKIKH NAUK,1960.71.
  • 9Lacroix C. Density of states for the asymmetric Anderson model[J].{H}Journal of Applied Physics,1982.2131.
  • 10Meir Y,Wingreen N S. Landauer formula for the current through an interacting electron region[J].{H}Physical Review Letters,1992.2512.

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原子与分子物理学报
2015年 第4期

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