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Quantitative determination of the critical points of Mott metal—insulator transition in strongly correlated systems |
| Yuekun Niu(牛月坤)1,†, Yu Ni(倪煜)2, Jianli Wang(王建利)3, Leiming Chen(陈雷鸣)3, Ye Xing(邢晔)3, Yun Song(宋筠)4,‡, and Shiping Feng(冯世平)4,§ |
1 School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, China;
2 College of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, China;
3 School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China;
4 Department of Physics, Beijing Normal University, Beijing 100875, China |
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Abstract Mottness is at the heart of the essential physics in a strongly correlated system as many novel quantum phenomena occur in the metallic phase near the Mott metal—insulator transition. We investigate the Mott transition in a Hubbard model by using the dynamical mean-field theory and introduce the local quantum state fidelity to depict the Mott metal—insulator transition. The local quantum state fidelity provides a convenient approach to determining the critical point of the Mott transition. Additionally, it presents a consistent description of the two distinct forms of the Mott transition points.
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Received: 12 September 2023
Revised: 23 October 2023
Accepted manuscript online: 26 October 2023
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PACS:
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71.30.+h
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(Metal-insulator transitions and other electronic transitions)
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71.27.+a
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(Strongly correlated electron systems; heavy fermions)
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71.10.-w
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(Theories and models of many-electron systems)
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| Fund: The authors would like to thank Gabriele Bellomia for fruitful discussions. YN is also grateful to Louk Rademaker and Haiming Dong for helpful discussions. Project supported by the Scientific Research Foundation for Youth Academic Talent of Inner Mongolia University (Grant No. 10000- 23112101/010) and the Fundamental Research Funds for the Central Universities of China (Grant No. JN200208). YS is supported by the National Natural Science Foundation of China (Grant No. 11474023). SF is supported by the National Key Research and Development Program of China (Grant No. 2021YFA1401803) and the National Natural Science Foundation of China (Grant Nos. 11974051 and 11734002). |
Corresponding Authors:
Yuekun Niu, Yun Song, Shiping Feng
E-mail: ykniu@imu.edu.cn;yunsong@bnu.edu.cn;spfeng@bnu.edu.cn
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Cite this article:
Yuekun Niu(牛月坤), Yu Ni(倪煜), Jianli Wang(王建利), Leiming Chen(陈雷鸣), Ye Xing(邢晔), Yun Song(宋筠), and Shiping Feng(冯世平) Quantitative determination of the critical points of Mott metal—insulator transition in strongly correlated systems 2024 Chin. Phys. B 33 017102
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