Experimental realization of type-II Weyl state in noncentrosymmetric TaIrTe4

被引：107

作者：

Haubold, E. ^{[1
]}

Koepernik, K. ^{[1
]}

Efremov, D. ^{[1
]}

Khim, S. ^{[1
,2
]}

Fedorov, A. ^{[1
,3
]}

Kushnirenko, Y. ^{[1
]}

van den Brink, J. ^{[1
,4
]}

Wurmehl, S. ^{[1
,4
]}

Buechner, B. ^{[1
,4
]}

Kim, T. K. ^{[5
]}

Hoesch, M. ^{[5
]}

Sumida, K. ^{[6
]}

Taguchi, K. ^{[6
]}

Yoshikawa, T. ^{[6
]}

Kimura, A. ^{[6
]}

Okuda, T. ^{[7
]}

Borisenko, S. V. ^{[1
]}

机构：

[1] IFW Dresden, Helmholtzstr 20, D-01069 Dresden, Germany

[2] Max Planck Inst Chem Phys Fester Stoffe, Nothnitzer Str 40, D-01187 Dresden, Germany

[3] Univ Cologne, Phys Inst 2, Zulpicher Str 77, D-50937 Cologne, Germany

[4] Tech Univ Dresden, Dept Phys, D-01062 Dresden, Germany

[5] Diamond Light Source, Harwell Campus, Didcot OX11 0DE, Oxon, England

[6] Hiroshima Univ, Grad Sch Sci, 1-3-1 Kagamiyama, Higashihiroshima 7398526, Japan

[7] Hiroshima Univ, HSRC, 2-313 Kagamiyama, Higashihiroshima 7390046, Japan

来源：

PHYSICAL REVIEW B | 2017年 / 95卷 / 24期

关键词：

SEMIMETAL PHASE;

D O I：

10.1103/PhysRevB.95.241108

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present experimental evidence for a type-II noncentrosymmetric Weyl state in TaIrTe4 where it has been recently predicted theoretically. We find direct correspondence between angle-resolved photoemission spectroscopy data and calculated electronic structure both in the bulk and the surface, and clearly observe the exotic surface states which support the quasi-one-dimensional Fermi arcs connecting only four Weyl points. Remarkably, these electronic states are spin polarized in the direction along the arcs, thus highlighting TaIrTe4 as an interesting type-II Weyl semimetal with a promising application potential.

引用

页数：7

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