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:
-
[4];
[8]
- Peking Univ., Beijing (China)
- Sun Yat-Sen Univ., Guangzhou (China)
- Huazhong Univ. of Science and Technology, Wuhan (China)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Hong Kong Polytechnic Univ. (China)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
- Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Wisconsin, Madison, WI (United States)
- 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. doi: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 = {Fri Dec 04 00:00:00 EST 2020},
month = {Fri Dec 04 00:00:00 EST 2020}
}
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