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Title: Tunable discrete scale invariance in transition-metal pentatelluride flakes

Abstract

Log-periodic quantum oscillations discovered in transition-metal pentatelluride give a clear demonstration of discrete scale invariance (DSI) in solid-state materials. The peculiar phenomenon is convincingly interpreted as the presence of two-body quasi-bound states in a Coulomb potential. However, the modifications of the Coulomb interactions in many-body systems having a Dirac-like spectrum are not fully understood. Here, we report the observation of tunable log-periodic oscillations and DSI in ZrTe5 and HfTe5 flakes. By reducing the flakes thickness, the characteristic scale factor is tuned to a much smaller value due to the reduction of the vacuum polarization effect. The decreasing of the scale factor demonstrates the many-body effect on the DSI, which has rarely been discussed hitherto. Furthermore, the cut-offs of oscillations are quantitatively explained by considering the Thomas-Fermi screening effect. Finally, our work clarifies the many-body effect on DSI and paves a way to tune the DSI in quantum materials.

Authors:
 [1];  [2];  [3];  [1];  [1];  [3];  [3]; ORCiD logo [4];  [5];  [6];  [7]; ORCiD logo [8]
  1. Peking Univ., Beijing (China)
  2. Sun Yat-Sen Univ., Guangzhou (China)
  3. Huazhong Univ. of Science and Technology, Wuhan (China)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Hong Kong Polytechnic Univ. (China)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  7. Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Wisconsin, Madison, WI (United States)
  8. Peking Univ., Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China); Beijing Academy of Quantum Information Sciences (China)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; National Key Research and Development Program of China; National Natural Science Foundation of China (NSFC); Beijing Natural Science Foundation; Chinese Academy of Sciences (CAS)
OSTI Identifier:
1756231
Grant/Contract Number:  
AC05-00OR22725; 2018YFA0305604; 2017YFA0303302; 11888101; 11774008; 12004441; Z180010; XDB28000000
Resource Type:
Accepted Manuscript
Journal Name:
npj Quantum Materials
Additional Journal Information:
Journal Volume: 5; Journal Issue: 1; Journal ID: ISSN 2397-4648
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; electronic properties and materials; topological matter

Citation Formats

Liu, Yanzhao, Wang, Huichao, Zhu, Haipeng, Li, Yanan, Ge, Jun, Wang, Junfeng, Li, Liang, Dai, Ji-Yan, Yan, Jiaqiang, Mandrus, David, Joynt, Robert, and Wang, Jian. Tunable discrete scale invariance in transition-metal pentatelluride flakes. United States: N. p., 2020. Web. https://doi.org/10.1038/s41535-020-00290-6.
Liu, Yanzhao, Wang, Huichao, Zhu, Haipeng, Li, Yanan, Ge, Jun, Wang, Junfeng, Li, Liang, Dai, Ji-Yan, Yan, Jiaqiang, Mandrus, David, Joynt, Robert, & Wang, Jian. Tunable discrete scale invariance in transition-metal pentatelluride flakes. United States. https://doi.org/10.1038/s41535-020-00290-6
Liu, Yanzhao, Wang, Huichao, Zhu, Haipeng, Li, Yanan, Ge, Jun, Wang, Junfeng, Li, Liang, Dai, Ji-Yan, Yan, Jiaqiang, Mandrus, David, Joynt, Robert, and Wang, Jian. Fri . "Tunable discrete scale invariance in transition-metal pentatelluride flakes". United States. https://doi.org/10.1038/s41535-020-00290-6. https://www.osti.gov/servlets/purl/1756231.
@article{osti_1756231,
title = {Tunable discrete scale invariance in transition-metal pentatelluride flakes},
author = {Liu, Yanzhao and Wang, Huichao and Zhu, Haipeng and Li, Yanan and Ge, Jun and Wang, Junfeng and Li, Liang and Dai, Ji-Yan and Yan, Jiaqiang and Mandrus, David and Joynt, Robert and Wang, Jian},
abstractNote = {Log-periodic quantum oscillations discovered in transition-metal pentatelluride give a clear demonstration of discrete scale invariance (DSI) in solid-state materials. The peculiar phenomenon is convincingly interpreted as the presence of two-body quasi-bound states in a Coulomb potential. However, the modifications of the Coulomb interactions in many-body systems having a Dirac-like spectrum are not fully understood. Here, we report the observation of tunable log-periodic oscillations and DSI in ZrTe5 and HfTe5 flakes. By reducing the flakes thickness, the characteristic scale factor is tuned to a much smaller value due to the reduction of the vacuum polarization effect. The decreasing of the scale factor demonstrates the many-body effect on the DSI, which has rarely been discussed hitherto. Furthermore, the cut-offs of oscillations are quantitatively explained by considering the Thomas-Fermi screening effect. Finally, our work clarifies the many-body effect on DSI and paves a way to tune the DSI in quantum materials.},
doi = {10.1038/s41535-020-00290-6},
journal = {npj Quantum Materials},
number = 1,
volume = 5,
place = {United States},
year = {2020},
month = {12}
}

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