Observation of Fermi Arcs in Non-Centrosymmetric Weyl Semi-Metal Candidate NbP

被引：61

作者：

Xu Di-Fei ^{[1
,2
,3
]}

Du Yong-Ping ^{[4
,5
]}

Wang Zhen ^{[6
,7
]}

Li Yu-Peng ^{[6
,7
]}

Niu Xiao-Hai ^{[1
,2
,3
]}

Yao Qi ^{[1
,2
,3
]}

Pavel, Dudin ^{[8
]}

Xu Zhu-An ^{[6
,7
,9
,10
]}

Wan Xian-Gang ^{[4
,5
]}

Feng Dong-Lai ^{[1
,2
,3
]}

机构：

[1] Fudan Univ, State Key Lab Surface Phys, Dept Phys, Shanghai 200433, Peoples R China

[2] Fudan Univ, Adv Mat Lab, Shanghai 200433, Peoples R China

[3] Fudan Univ, Collaborat Innovat Ctr Adv Microstruct, Shanghai 200433, Peoples R China

[4] Nanjing Univ, Natl Lab Solid State Microstruct, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[5] Nanjing Univ, Coll Phys, Nanjing 210093, Jiangsu, Peoples R China

[6] Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China

[7] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China

[8] Diamond Light Source, Didcot OX11 0DE, Oxon, England

[9] Zhejiang Univ, Zhejiang Calif Int NanoSyst Inst, Hangzhou 310027, Zhejiang, Peoples R China

[10] Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2015年 / 32卷 / 10期

基金：

中国国家自然科学基金;

关键词：

TOPOLOGICAL DIRAC SEMIMETAL; DISCOVERY; MOBILITY; PHASE;

D O I：

10.1088/0256-307X/32/10/107101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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.

引用

页数：5

共 41 条

[1] Large, non-saturating magnetoresistance in WTe2 [J].

Ali, Mazhar N. ;

Xiong, Jun ;

Flynn, Steven ;

Tao, Jing ;

Gibson, Quinn D. ;

Schoop, Leslie M. ;

Liang, Tian ;

Haldolaarachchige, Neel ;

Hirschberger, Max ;

Ong, N. P. ;

Cava, R. J. .

NATURE, 2014, 514 (7521) :205-+

[2]

[Anonymous], 2013, ARXIV13010330CONDMAT

[3]

Balents L., 2011, Physics, V4, P36, DOI DOI 10.1103/PHYSICS.4.36

[4] Experimental Realization of a Three-Dimensional Dirac Semimetal [J].

Borisenko, Sergey ;

Gibson, Quinn ;

Evtushinsky, Danil ;

Zabolotnyy, Volodymyr ;

Buechner, Bernd ;

Cava, Robert J. .

PHYSICAL REVIEW LETTERS, 2014, 113 (02)

[5] Colloquium: Topological insulators [J].

Hasan, M. Z. ;

Kane, C. L. .

REVIEWS OF MODERN PHYSICS, 2010, 82 (04) :3045-3067

[6] Friedel oscillations due to Fermi arcs in Weyl semimetals [J].

Hosur, Pavan .

PHYSICAL REVIEW B, 2012, 86 (19)

[7] A Weyl Fermion semimetal with surface Fermi arcs in the transition metal monopnictide TaAs class [J].

Huang, Shin-Ming ;

Xu, Su-Yang ;

Belopolski, Ilya ;

Lee, Chi-Cheng ;

Chang, Guoqing ;

Wang, BaoKai ;

Alidoust, Nasser ;

Bian, Guang ;

Neupane, Madhab ;

Zhang, Chenglong ;

Jia, Shuang ;

Bansil, Arun ;

Lin, Hsin ;

Hasan, M. Zahid .

NATURE COMMUNICATIONS, 2015, 6

[8] TECHNIQUE FOR RELATIVISTIC SPIN-POLARIZED CALCULATIONS [J].

KOELLING, DD ;

HARMON, BN .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1977, 10 (16) :3107-3114

[9] Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set [J].

Kresse, G ;

Furthmuller, J .

PHYSICAL REVIEW B, 1996, 54 (16) :11169-11186

[10] ABINITIO MOLECULAR-DYNAMICS FOR LIQUID-METALS [J].

KRESSE, G ;

HAFNER, J .

PHYSICAL REVIEW B, 1993, 47 (01) :558-561

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