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

Abstract

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.

Authors:
 [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)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Engineering and Physical Sciences Research Council (EPSRC); Chinese Academy of Sciences; European Research Council (ERC); National Research Foundation of Korea (NRF)
OSTI Identifier:
1408432
Grant/Contract Number:  
AC02-05CH11231; EP/M020517/1; CAS-SSRC-YH-2015-01; 291472; 2011-0030787
Resource Type:
Accepted Manuscript
Journal Name:
New Journal of Physics
Additional Journal Information:
Journal Volume: 19; Journal Issue: 6; Journal ID: ISSN 1367-2630
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Ekahana, Sandy Adhitia, Wu, Shu-Chun, Jiang, Juan, Okawa, Kenjiro, Prabhakaran, Dharmalingam, Hwang, Chan-Cuk, Mo, Sung-Kwan, Sasagawa, Takao, Felser, Claudia, Yan, Binghai, Liu, Zhongkai, and Chen, Yulin. Observation of nodal line in non-symmorphic topological semimetal InBi. United States: N. p., 2017. Web. doi:10.1088/1367-2630/aa75a1.
Ekahana, Sandy Adhitia, Wu, Shu-Chun, Jiang, Juan, Okawa, Kenjiro, Prabhakaran, Dharmalingam, Hwang, Chan-Cuk, Mo, Sung-Kwan, Sasagawa, Takao, Felser, Claudia, Yan, Binghai, Liu, Zhongkai, & Chen, Yulin. Observation of nodal line in non-symmorphic topological semimetal InBi. United States. doi:10.1088/1367-2630/aa75a1.
Ekahana, Sandy Adhitia, Wu, Shu-Chun, Jiang, Juan, Okawa, Kenjiro, Prabhakaran, Dharmalingam, Hwang, Chan-Cuk, Mo, Sung-Kwan, Sasagawa, Takao, Felser, Claudia, Yan, Binghai, Liu, Zhongkai, and Chen, Yulin. Tue . "Observation of nodal line in non-symmorphic topological semimetal InBi". United States. doi:10.1088/1367-2630/aa75a1. https://www.osti.gov/servlets/purl/1408432.
@article{osti_1408432,
title = {Observation of nodal line in non-symmorphic topological semimetal InBi},
author = {Ekahana, Sandy Adhitia and Wu, Shu-Chun and Jiang, Juan and Okawa, Kenjiro and Prabhakaran, Dharmalingam and Hwang, Chan-Cuk and Mo, Sung-Kwan and Sasagawa, Takao and Felser, Claudia and Yan, Binghai and Liu, Zhongkai and Chen, Yulin},
abstractNote = {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.},
doi = {10.1088/1367-2630/aa75a1},
journal = {New Journal of Physics},
number = 6,
volume = 19,
place = {United States},
year = {2017},
month = {5}
}

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    Works referencing / citing this record:

    Dirac nodal lines protected against spin-orbit interaction in IrO 2
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    Dirac nodal lines protected against spin-orbit interaction in IrO 2
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