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Title: Observation of nodal line in non-symmorphic topological semimetal InBi

Journal Article · · New Journal of Physics
 [1];  [2];  [3];  [4];  [1];  [5];  [6];  [4];  [2];  [2];  [7];  [8]
  1. Univ. of Oxford (United Kingdom)
  2. Max Planck Inst. for Chemical Physics of Solids, Dresden (Germany)
  3. ShanghaiTech Univ. and CAS-Shanghai Science Research Center, Shanghai (China); Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Tokyo Inst. of Technology, Yokohama (Japan)
  5. Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of)
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  7. ShanghaiTech Univ. and CAS-Shanghai Science Research Center, Shanghai (China)
  8. Univ. of Oxford (United Kingdom); ShanghaiTech Univ. and CAS-Shanghai Science Research Center, Shanghai (China)

Topological nodal semimetal (TNS), characterized 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 one-dimension 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 (which is also a type II Dirac semimetal) with strong spin–orbit coupling by using angle resolved photoemission spectroscopy. By tracking the crossing points of the bulk bands at the Brillouin zone boundary, we discovered the nodal-line feature along the $${{k}}_{{z}}$$ direction, in agreement with the ab initio calculations and confirmed it to be a new compound in the TNLS family. Our discovery provides a new material platform for the study of these exotic topological quantum phases and paves the way for possible future applications.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Engineering and Physical Sciences Research Council (EPSRC); Chinese Academy of Sciences; European Research Council (ERC); National Research Foundation of Korea (NRF)
Grant/Contract Number:
AC02-05CH11231; EP/M020517/1; CAS-SSRC-YH-2015-01; 291472; 2011-0030787
OSTI ID:
1408432
Journal Information:
New Journal of Physics, Vol. 19, Issue 6; ISSN 1367-2630
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 43 works
Citation information provided by
Web of Science

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Cited By (12)

Quantum transport in topological semimetals under magnetic fields (II) journal April 2019
Directional massless Dirac fermions in a layered van der Waals material with one-dimensional long-range order journal October 2019
Visualizing electronic structures of quantum materials by angle-resolved photoemission spectroscopy journal August 2018
Strong anisotropic nodal lines in the TiBe family journal January 2019
Magnetotransport and superconductivity in InBi films grown on Si(111) by molecular beam epitaxy journal September 2019
New type of hybrid nodal line semimetal in Be 2 Si journal March 2019
Optical conductivity of three and two dimensional topological nodal-line semimetals journal October 2017
Topological and trivial magnetic oscillations in nodal loop semimetals journal May 2018
Parity anomaly in the nonlinear response of nodal-line semimetals journal October 2018
Dirac nodal lines protected against spin-orbit interaction in IrO 2 journal June 2019
Optical conductivity of three and two dimensional topological nodal line semimetals text January 2017
Spectroscopic Evidence on Realization of a Genuine Topological Nodal Line Semimetal in LaSbTe preprint January 2021

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