Khudaiberdiev, Daniiar and Kvon, Ze Don and Entin, Matvey V. and Kozlov, Dmitriy A. and Mikhailov, Nikolay N. and Ryzhkov, Maxim (2023) Mesoscopic Conductance Fluctuations in 2D HgTe Semimetal. NANOMATERIALS, 13 (21): 2882. ISSN , 2079-4991
Full text not available from this repository. (Request a copy)Abstract
Mesoscopic conductance fluctuations were discovered in a weak localization regime of a strongly disordered two-dimensional HgTe-based semimetal. These fluctuations exist in macroscopic samples with characteristic sizes of 100 mu m and exhibit anomalous dependences on the gate voltage, magnetic field, and temperature. They are absent in the regime of electron metal (at positive gate voltages) and strongly depend on the level of disorder in the system. All the experimental facts lead us to the conclusion that the origin of the fluctuations is a special collective state in which the current is conducted through the percolation network of electron resistances. We suppose that the network is formed by fluctuation potential whose amplitude is higher than the Fermi level of electrons due to their very low density.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 2-DIMENSIONAL SEMIMETAL; TEMPERATURE; quantum wells; universal conductance fluctuations; two-dimensional semimetal |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 16 Mar 2024 12:12 |
| Last Modified: | 16 Mar 2024 12:12 |
| URI: | https://pred.uni-regensburg.de/id/eprint/60165 |
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