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Observation of nodal line in non-symmorphic topological semimetal InBi
Authors:
Sandy Adhitia
Ekahana
(University of Oxford)
,
Shu-Chun
Wu
(Max-Planck-Institut für Chemische Physik)
,
Juan
Jiang
(Fudan University)
,
Kenjiro
Okawa
(Tokyo Kogyo Daigaku)
,
Dharmalingam
Prabhakaran
(University of Oxford)
,
Chan-Cuk
Hwang
(Pohang University of Science and Technology)
,
Sung-Kwan
Mo
(Lawrence Berkeley National Laboratory)
,
Takao
Sasagawa
(Tokyo Institute of Technology)
,
Claudia
Felser
(Max Planck Institute for Chemical Physics of Solids)
,
Binghai
Yan
(Max-Planck-Institut fur Chemische Physik fester Stoffe)
,
Zhongkai
Liu
(Diamond Light Source)
,
Yulin
Chen
(University of Oxford)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
New Journal Of Physics
State:
Published (Approved)
Published:
June 2017

Abstract: Topological Nodal Semimetal (TNS), characterised by its touching conduction and valence bands, is a newly discovered state of quantum matter which exhibits various exotic physical phenomena. Recently, a new type of TNS called Topological Nodal Line Semimetal (TNLS) is predicted where its conduction and valence band form a degenerate 1D line which is further protected by its crystal symmetry. In this work, we systematically investigated the bulk and surface electronic structure of the non-symmorphic, TNLS in InBi with strong spin-orbit coupling by using Angle Resolved Photoemission Spectroscopy (ARPES). By tracking the crossing points of the bulk bands at the Brillouin zone boundary, we discovered the nodal-line feature along the XRX line, in agreement with the ab-initio calculations and confirmed it to be a new compound in the TNLS family. Our discovery provides new material platform for the study of these exotic topological quantum phases and paves the way for possible future applications.
Subject Areas:
Physics,
Materials
Instruments:
I05-ARPES
Added On:
26/06/2017 09:43
Documents:
p4545df.pdf
Discipline Tags:
Quantum Materials
Physics
Hard condensed matter - structures
Materials Science
Technical Tags:
Spectroscopy
Angle Resolved Photoemission Spectroscopy (ARPES)