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Title: Visualizing discrete Fermi surfaces and possible nodal-line to Weyl state evolution in ZrSiTe

Abstract

Topological nodal line semimetals (TNLSMs) represent a quantum state of topological matter. When the crystal/time-reversal symmetry is broken, a nodal line state is expected to evolve into a Dirac semimetal, a Weyl semimetal, or other topological phases according to theoretical studies. Here, we report scanning tunneling microscopy (STM) based quasiparticle interference (QPI) measurements performed on the surface of TNLSM ZrSiTe single crystal. A discrete Fermi surface with multiple electron/hole pockets and the impurity-induced inter-/intra- pockets scatterings are directly visualized from QPI patterns. Moreover, the degenerated Dirac points at X point evolve into the pairs of Weyl nodes when Fe atoms are deposited, suggesting a possible phase transition from the nodal line to the Weyl state. The calculated band structures and the Weyl points by applying Zeeman splitting energies along x-direction, further confirm the existence of Weyl points in the Fe-doped ZrSiTe induced by the broken of time-reversal symmetry.

Authors:
 [1];  [1];  [1];  [1]; ORCiD logo [2];  [2];  [3];  [1]; ORCiD logo [1];  [1];  [1]; ORCiD logo [4]
  1. Huazhong University of Science and Technology, Wuhan (China)
  2. Tulane University, New Orleans, LA (United States)
  3. Shaanxi Normal University, Xi'an (China)
  4. Huazhong University of Science and Technology, Wuhan (China); Shaanxi Normal University, Xi'an (China)
Publication Date:
Research Org.:
Tulane Univ., New Orleans, LA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); Postdoctoral Innovative Talent Support Program of China; National Key Research and Development Program of China; National Natural Science Foundation of China (NSFC)
OSTI Identifier:
1978616
Grant/Contract Number:  
SC0014208; BX20200202; 2018YFA0307000; 11574095; 11604106; 21622306; 91545127; 11874022; 12004234
Resource Type:
Accepted Manuscript
Journal Name:
npj Quantum Materials
Additional Journal Information:
Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2397-4648
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; surfaces; interfaces; thin films; topological matter

Citation Formats

Bian, Qi, Li, Shaojian, Luo, Aiyun, Zhang, Zongyuan, Hu, Jin, Zhu, Yanglin, Shao, Zhibin, Sun, Haigen, Cheng, Zhengwang, Mao, Zhiqiang, Xu, Gang, and Pan, Minghu. Visualizing discrete Fermi surfaces and possible nodal-line to Weyl state evolution in ZrSiTe. United States: N. p., 2022. Web. doi:10.1038/s41535-022-00463-5.
Bian, Qi, Li, Shaojian, Luo, Aiyun, Zhang, Zongyuan, Hu, Jin, Zhu, Yanglin, Shao, Zhibin, Sun, Haigen, Cheng, Zhengwang, Mao, Zhiqiang, Xu, Gang, & Pan, Minghu. Visualizing discrete Fermi surfaces and possible nodal-line to Weyl state evolution in ZrSiTe. United States. https://doi.org/10.1038/s41535-022-00463-5
Bian, Qi, Li, Shaojian, Luo, Aiyun, Zhang, Zongyuan, Hu, Jin, Zhu, Yanglin, Shao, Zhibin, Sun, Haigen, Cheng, Zhengwang, Mao, Zhiqiang, Xu, Gang, and Pan, Minghu. Thu . "Visualizing discrete Fermi surfaces and possible nodal-line to Weyl state evolution in ZrSiTe". United States. https://doi.org/10.1038/s41535-022-00463-5. https://www.osti.gov/servlets/purl/1978616.
@article{osti_1978616,
title = {Visualizing discrete Fermi surfaces and possible nodal-line to Weyl state evolution in ZrSiTe},
author = {Bian, Qi and Li, Shaojian and Luo, Aiyun and Zhang, Zongyuan and Hu, Jin and Zhu, Yanglin and Shao, Zhibin and Sun, Haigen and Cheng, Zhengwang and Mao, Zhiqiang and Xu, Gang and Pan, Minghu},
abstractNote = {Topological nodal line semimetals (TNLSMs) represent a quantum state of topological matter. When the crystal/time-reversal symmetry is broken, a nodal line state is expected to evolve into a Dirac semimetal, a Weyl semimetal, or other topological phases according to theoretical studies. Here, we report scanning tunneling microscopy (STM) based quasiparticle interference (QPI) measurements performed on the surface of TNLSM ZrSiTe single crystal. A discrete Fermi surface with multiple electron/hole pockets and the impurity-induced inter-/intra- pockets scatterings are directly visualized from QPI patterns. Moreover, the degenerated Dirac points at X point evolve into the pairs of Weyl nodes when Fe atoms are deposited, suggesting a possible phase transition from the nodal line to the Weyl state. The calculated band structures and the Weyl points by applying Zeeman splitting energies along x-direction, further confirm the existence of Weyl points in the Fe-doped ZrSiTe induced by the broken of time-reversal symmetry.},
doi = {10.1038/s41535-022-00463-5},
journal = {npj Quantum Materials},
number = 1,
volume = 7,
place = {United States},
year = {Thu May 26 00:00:00 EDT 2022},
month = {Thu May 26 00:00:00 EDT 2022}
}

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