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

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

Chin. Phys. Lett.

2015, Vol. 32

Issue (10): 107101 DOI: 10.1088/0256-307X/32/10/107101

CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES

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

XU Di-Fei^1,2, DU Yong-Ping³, WANG Zhen^4,5, LI Yu-Peng^4,5, NIU Xiao-Hai^1,2, YAO Qi^1,2, Dudin Pavel⁶, XU Zhu-An^4,5,7,8, WAN Xian-Gang^3**, FENG Dong-Lai^1,2**

¹State Key Laboratory of Surface Physics, Department of Physics, and Laboratory of Advanced Materials, Fudan University, Shanghai 200433
²Collaborative Innovation Center of Advanced Microstructures, Fudan University, Shanghai 200433
³National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and College of Physics, Nanjing University, Nanjing 210093
⁴Department of Physics, Zhejiang University, Hangzhou 310027
⁵State Key Lab of Silicon Materials, Zhejiang University, Hangzhou 310027
⁶Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom
⁷Zhejiang California International NanoSystems Institute, Zhejiang University, Hangzhou 310027
⁸Collaborative Innovation Centre of Advanced Microstructures, Nanjing 210093

Cite this article:

XU Di-Fei, DU Yong-Ping, WANG Zhen et al 2015 Chin. Phys. Lett. 32 107101

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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.

Received: 10 September 2015 Published: 30 October 2015

PACS:	71.55.Ak	(Metals, semimetals, and alloys)
	74.20.Pq	(Electronic structure calculations)
	74.25.Jb	(Electronic structure (photoemission, etc.))
	79.60.-i	(Photoemission and photoelectron spectra)

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https://cpl.iphy.ac.cn/10.1088/0256-307X/32/10/107101 OR https://cpl.iphy.ac.cn/Y2015/V32/I10/107101

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	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

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