Universität zu Köln

Souma, S., Wang, Zhiwei ORCID: 0000-0003-0182-2471, Kotaka, H., Sato, T., Nakayama, K., Tanaka, Y., Kimizuka, H., Takahashi, T., Yamauchi, K., Oguchi, T., Segawa, Kouji and Ando, Yoichi ORCID: 0000-0002-3553-3355 (2016). Direct observation of nonequivalent Fermi-arc states of opposite surfaces in the noncentrosymmetric Weyl semimetal NbP. Phys. Rev. B, 93 (16). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

We have performed high-resolution angle-resolved photoemission spectroscopy (ARPES) on noncentrosymmetric Weyl semimetal candidate NbP, and determined the electronic states of both Nb- and P-terminated surfaces. We revealed a drastic difference in the Fermi-surface topology between two types of surfaces, whereas the Fermi arcs on both surfaces are likely terminated at the surface projection of the same bulk Weyl nodes. A comparison of the ARPES data with our first-principles band calculations suggests a notable difference in the electronic structure at the Nb-terminated surface between theory and experiment. The present result opens a platform for realizing exotic quantum phenomena arising from the unusual surface properties of Weyl semimetals.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Souma, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wang, Zhiwei UNSPECIFIED orcid.org/0000-0003-0182-2471 UNSPECIFIED Kotaka, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sato, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nakayama, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tanaka, Y. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kimizuka, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Takahashi, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Yamauchi, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Oguchi, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Segawa, Kouji UNSPECIFIED UNSPECIFIED UNSPECIFIED Ando, Yoichi UNSPECIFIED orcid.org/0000-0002-3553-3355 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-278464
DOI:	10.1103/PhysRevB.93.161112
Journal or Publication Title:	Phys. Rev. B
Volume:	93
Number:	16
Date:	2016
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9969
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics II
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language TAAS; TRANSITION; DISCOVERY; NEUTRINOS; ABSENCE; LATTICE; PHASE; NODES; PROOF Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/27846