Abstract
We have measured the longitudinal and Hall resistivities in the quantum Hall regime at magnetic fields B up to 9 T and temperatures \(T =(2.9\div 50)\) K for the HgCdTe/HgTe/HgCdTe heterostructure with a wide HgTe quantum well. The temperature-induced transport at the resistivity minima corresponding to the quantum Hall plateaus has been studied within the concept of hopping conduction in a strongly localized electron system. An analysis of the variable-range hopping conductivity in the regions of the first and second quantum Hall plateaus provided an opportunity to determine the value and the magnetic-field dependence of the localization length with the experimental estimation of the critical indices.
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Acknowledgments
This work was carried out as part of the government task “Spin” No. 01201463330 with partial support from the Russian Foundation for Basic Research (RFBR) Grant No. 14-02-00151. The measurements were done in the Testing center of nanotechnology and advanced materials of M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences.
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Arapov, Y.G., Gudina, S.V., Neverov, V.N. et al. Variable-Range Hopping Conductivity in Quantum Hall Regime for HgTe-Based Heterostructure. J Low Temp Phys 185, 665–672 (2016). https://doi.org/10.1007/s10909-016-1477-0
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DOI: https://doi.org/10.1007/s10909-016-1477-0