The field of two-dimensional(2D)magnets has expanded rapidly during the past several years since the first demonstration of intrinsic 2D magnetism in atomically thin CrI_(3) and Cr_(2)Ge_(2)Te_(6) in 2017.2D transitio...The field of two-dimensional(2D)magnets has expanded rapidly during the past several years since the first demonstration of intrinsic 2D magnetism in atomically thin CrI_(3) and Cr_(2)Ge_(2)Te_(6) in 2017.2D transition metal chalcogenides(TMCs),a class of strongly correlated materials,have exhibited a wide variety of novel electronic and optical properties,and more recently magnetism.Here,we review recent experimental progress achieved in the growth of 2D magnetic TMC materials using chemical vapor deposition and molecular beam epitaxy methods.Outstanding examples include the demonstration of room temperature intrinsic and extrinsic ferromagnetism in monolayer VSe_(2),MnSe_(2),Cr_(3)Te_(4),V-doped WSe_(2),and so on.A brief discussion on the origin of the exotic magnetic properties and emergent phenomena is also presented.Finally,we summarize the remaining challenges and future perspective on the development of 2D magnetic materials for next-generation spintronic devices.展开更多
Phosphorus is an important non-metal element with many allotropes and tunable electronic properties.As one of the most important allotropes of phosphorus,two-dimensional(2D)black phosphorus(BP)possesses many extraordi...Phosphorus is an important non-metal element with many allotropes and tunable electronic properties.As one of the most important allotropes of phosphorus,two-dimensional(2D)black phosphorus(BP)possesses many extraordinary properties,such as high charge carrier mobility with high on/off ratio,thickness-dependent direct bandgap varying from 0.3 to 2 eV,and anisotropic electrical,optical and thermal properties.Inspiring by the success of 2D BP,other 2D phosphorus allotropes with intriguing properties for nextgeneration electronic and optoelectronic devices have also attracted much attention.However,large-scale growth of high-quality 2D single/few-layer phosphorus remains a great challenge.In this review,we highlight recent progress achieved on 2D phosphorus,with special focus on the epitaxial growth of 2D BP films,blue phosphorus(BlueP)monolayers as well as phosphorusmetal porous networks.The remaining challenges and future perspectives on the development of monolayer phosphorus or phosphorus-metal alloys are also provided.展开更多
基金support from the National Natural Science Foundation of China(project No.:12004278)Andrew T.S.Wee acknowledges the funds NRF of Singapore(grant No.R-144-000-405-281)MOE Tier 2 grant MOE2016-T2-2-110.
文摘The field of two-dimensional(2D)magnets has expanded rapidly during the past several years since the first demonstration of intrinsic 2D magnetism in atomically thin CrI_(3) and Cr_(2)Ge_(2)Te_(6) in 2017.2D transition metal chalcogenides(TMCs),a class of strongly correlated materials,have exhibited a wide variety of novel electronic and optical properties,and more recently magnetism.Here,we review recent experimental progress achieved in the growth of 2D magnetic TMC materials using chemical vapor deposition and molecular beam epitaxy methods.Outstanding examples include the demonstration of room temperature intrinsic and extrinsic ferromagnetism in monolayer VSe_(2),MnSe_(2),Cr_(3)Te_(4),V-doped WSe_(2),and so on.A brief discussion on the origin of the exotic magnetic properties and emergent phenomena is also presented.Finally,we summarize the remaining challenges and future perspective on the development of 2D magnetic materials for next-generation spintronic devices.
基金support from the Natural Science Foundation of China(U2032147,21872100,12004278)Singapore MOE Grant MOE-2019-T2-1-002.
文摘Phosphorus is an important non-metal element with many allotropes and tunable electronic properties.As one of the most important allotropes of phosphorus,two-dimensional(2D)black phosphorus(BP)possesses many extraordinary properties,such as high charge carrier mobility with high on/off ratio,thickness-dependent direct bandgap varying from 0.3 to 2 eV,and anisotropic electrical,optical and thermal properties.Inspiring by the success of 2D BP,other 2D phosphorus allotropes with intriguing properties for nextgeneration electronic and optoelectronic devices have also attracted much attention.However,large-scale growth of high-quality 2D single/few-layer phosphorus remains a great challenge.In this review,we highlight recent progress achieved on 2D phosphorus,with special focus on the epitaxial growth of 2D BP films,blue phosphorus(BlueP)monolayers as well as phosphorusmetal porous networks.The remaining challenges and future perspectives on the development of monolayer phosphorus or phosphorus-metal alloys are also provided.
