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Experimental realization of type-II Weyl state in noncentrosymmetric TaIrTe4
DOI:
10.1103/PhysRevB.95.241108
Authors:
E.
Haubold
(IFW Dresden)
,
K.
Koepernik
(IFW Dresden)
,
D.
Efremov
(IFW Dresden)
,
S.
Khim
(IFW Dresden; Max-Planck-Institut für Chemische Physik fester Stoffe)
,
A.
Fedorov
(IFW Dresden; II. Physikalisches Institut, Universität zu Köln)
,
Y.
Kushnirenko
(IFW Dresden)
,
J.
Van Den Brink
(IFW Dresden; TU Dresden)
,
S.
Wurmehl
(IFW Dresden; TU Dresden)
,
B.
Buchner
(IFW Dresden; TU Dresden)
,
T. K.
Kim
(Diamond Light Source)
,
M.
Hoesch
(Diamond Light Source)
,
K.
Sumida
(Hiroshima University)
,
K.
Taguchi
(Hiroshima University)
,
T.
Yoshikawa
(Hiroshima University)
,
A.
Kimura
(Hiroshima University)
,
T.
Okuda
(Hiroshima Synchrotron Radiation Center (HSRC))
,
S. V.
Borisenko
(IFW Dresden)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Physical Review B
, VOL 95
State:
Published (Approved)
Published:
June 2017
Diamond Proposal Number(s):
13856
Abstract: 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.
Subject Areas:
Materials,
Physics
Instruments:
I05-ARPES
Other Facilities: Hiroshima Synchrotron Radiation Center (HSRC)