典型文献
Janus VXY monolayers with tunable large Berry curvature
文献摘要：
The Rashba effect and valley polarization provide a novel paradigm in quantum information technology.However,practical materials are scarce.Here,we found a new class of Janus monolayers VXY(X=Cl,Br,I;Y=Se,Te)with excellent val-ley polarization effect.In particular,Janus VBrSe shows Zeeman type spin splitting of 14 meV,large Berry curvature of 182.73 bohr2,and,at the same time,a large Rashba parameter of 176.89 meV·?.We use the k·p theory to analyze the relationship between the lattice constant and the curvature of the Berry.The Berry curvature can be adjusted by changing the lattice parameter,which will greatly improve the transverse velocities of carriers and promote the efficiency of the valley Hall device.By applying biaxial strain onto VBrSe,we can see that there is a correlation between Berry curvature and lattice constant,which further valid-ates the above theory.All these results provide tantalizing opportunities for efficient spintronics and valleytronics.
文献关键词：
中图分类号：
作者姓名：
Wenrong Liu;Xinyang Li;Changwen Zhang;Shishen Yan
作者机构：
School of Physics and Technology,Spintronics Institute,University of Jinan,Jinan 250022,China
文献出处：
引用格式：
[1]Wenrong Liu;Xinyang Li;Changwen Zhang;Shishen Yan-.Janus VXY monolayers with tunable large Berry curvature)[J].半导体学报（英文版）,2022(04):101-110
A类：
VXY,VBrSe,bohr2,tantalizing
B类：
Janus,monolayers,tunable,large,Berry,curvature,Rashba,effect,polarization,provide,novel,paradigm,quantum,information,technology,However,practical,materials,are,scarce,Here,found,new,class,Cl,Te,excellent,In,particular,shows,Zeeman,type,splitting,meV,same,parameter,We,use,theory,analyze,relationship,between,lattice,constant,can,adjusted,by,changing,which,will,greatly,improve,transverse,velocities,carriers,promote,efficiency,Hall,device,By,applying,biaxial,strain,onto,see,that,there,is,correlation,further,valid,ates,above,All,these,results,opportunities,efficient,spintronics,valleytronics
AB值：
0.544039
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