典型文献
Surface-induced orbital-selective band reconstruction in kagome superconductor CsV3Sb5
文献摘要：
The two-dimensional(2D)kagome superconductor CsV3Sb5 has attracted much recent attention due to the coexis-tence of superconductivity,charge orders,topology and kagome physics,which manifest themselves as distinct electronic structures in both bulk and surface states of the material.An interesting next step is to manipulate the electronic states in this system.Here,we report angle-resolved photoemission spectroscopy(ARPES)evidence for a surface-induced orbital-selective band reconstruction in CsV3Sb5.A significant energy shift of the electron-like band around Г and a moderate energy shift of the hole-like band around M are observed as a function of time.This evolution is reproduced in a much shorter time scale by in-situ annealing of the CsV3Sb5 sample.Orbital-resolved density functional theory(DFT)calcula-tions reveal that the momentum-dependent band reconstruction is associated with different orbitals for the bands aroundГ and M,and the time-dependent evolution points to the change of sample surface that is likely caused by the formation of Cs vacancies on the surface.Our results indicate the possibility of orbital-selective control of the band structure via surface modification,which may open a new avenue for manipulating exotic phenomena in this material system,including superconductivity.
文献关键词：
中图分类号：
作者姓名：
Linwei Huai;Yang Luo;Samuel M.L.Teicher;Brenden R.Ortiz;Kaize Wang;Shuting Peng;Zhiyuan Wei;Jianchang Shen;Bingqian Wang;Yu Miao;Xiupeng Sun;Zhipeng Ou;Stephen D.Wilson;Junfeng He
作者机构：
CAS Key Laboratory of Strongly-coupled Quantum Matter Physics and Department of Physics,University of Science and Technology of China,Hefei 230026,China;Materials Department and California Nanosystems Institute,University of California Santa Barbara,Santa Barbara,California 93106,USA
文献出处：
引用格式：
[1]Linwei Huai;Yang Luo;Samuel M.L.Teicher;Brenden R.Ortiz;Kaize Wang;Shuting Peng;Zhiyuan Wei;Jianchang Shen;Bingqian Wang;Yu Miao;Xiupeng Sun;Zhipeng Ou;Stephen D.Wilson;Junfeng He-.Surface-induced orbital-selective band reconstruction in kagome superconductor CsV3Sb5)[J].中国物理B（英文版）,2022(05):12-16
A类：
ARPES
B类：
Surface,induced,selective,reconstruction,kagome,superconductor,CsV3Sb5,two,dimensional,2D,has,attracted,much,recent,attention,due,coexis,tence,superconductivity,charge,orders,topology,physics,which,manifest,themselves,distinct,electronic,structures,both,bulk,surface,states,material,An,interesting,next,step,manipulate,this,system,Here,we,report,angle,resolved,photoemission,spectroscopy,evidence,significant,energy,shift,around,moderate,hole,are,observed,This,evolution,reproduced,shorter,scale,by,situ,annealing,sample,Orbital,density,functional,theory,DFT,calcula,tions,reveal,that,momentum,dependent,associated,different,orbitals,bands,points,change,likely,caused,formation,vacancies,Our,results,indicate,possibility,control,via,modification,may,open,new,avenue,manipulating,exotic,phenomena,including
AB值：
0.57292
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