【作者】
徐迪飞；
杜永平；
王震；
李宇鹏；
牛晓海；
姚岐；
Dudin Pavel；
许祝安；
万贤纲；
封东来；
【Author】
XU Di-Fei;DU Yong-Ping;WANG Zhen;LI Yu-Peng;NIU Xiao-Hai;YAO Qi;Dudin Pavel;XU Zhu-An;WAN Xian-Gang;FENG Dong-Lai;State Key Laboratory of Surface Physics,Department of Physics,and Laboratory of Advanced Materials,Fudan University;Collaborative Innovation Center of Advanced Microstructures,Fudan University;National Laboratory of Solid State Microstructures,Collaborative Innovation Center of Advanced Microstructures,and College of Physics,Nanjing University;Department of Physics,Zhejiang University;State Key Lab of Silicon Materials,Zhejiang University;Diamond Light Source,Harwell Science and Innovation Campus;Zhejiang California International NanoSystems Institute,Zhejiang University;Collaborative Innovation Centre of Advanced Microstructures;
【机构】
State Key Laboratory of Surface Physics,Department of Physics,and Laboratory of Advanced Materials,Fudan University；
Collaborative Innovation Center of Advanced Microstructures,Fudan University；
National Laboratory of Solid State Microstructures,Collaborative Innovation Center of Advanced Microstructures,and College of Physics,Nanjing University；
Department of Physics,Zhejiang University；
State Key Lab of Silicon Materials,Zhejiang University；
Diamond Light Source,Harwell Science and Innovation Campus；
Zhejiang California International NanoSystems Institute,Zhejiang University；
Collaborative Innovation Centre of Advanced Microstructures；
【摘要】 We report the surface electronic structure of niobium phosphide NbP single crystal on(001) surface by vacuum ultraviolet angle-resolved photoemission spectroscopy.Combining with our first principle calculations,we identify the existence of the Fermi arcs originated from topological surface states.Furthermore,the surface states exhibit circular dichroism pattern,which may correlate with its non-trivial spin texture.Our results provide critical evidence for the existence of the Weyl Fermions in NbP,which lays the foundation for further research.更多还原
【Abstract】 We report the surface electronic structure of niobium phosphide NbP single crystal on(001) surface by vacuum ultraviolet angle-resolved photoemission spectroscopy.Combining with our first principle calculations,we identify the existence of the Fermi arcs originated from topological surface states.Furthermore,the surface states exhibit circular dichroism pattern,which may correlate with its non-trivial spin texture.Our results provide critical evidence for the existence of the Weyl Fermions in NbP,which lays the foundation for further research.更多还原
【基金】 Supported by the National Natural Science Foundation of China under Grant Nos 11174124,11274068,11374137,11421404 and 13ZR1451700;the National Basic Research Program of China(973 Program)under Grant No 2012CB921402
