Quantum Hall effect and hopping conductivity in n-InGaAs/InAlAs nanoheterostructures
- Authors: Gudina S.V.1, Arapov Y.G.1, Saveliev A.P.1, Neverov V.N.1, Podgornykh S.M.1,2, Shelushinina N.G.1, Yakunin M.V.1,2, Vasil’evskii I.S.3, Vinichenko A.N.3
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Affiliations:
- Mikheev Institute of Metal Physics, Ural Branch
- Yeltsin Ural Federal University
- National Research Nuclear University MEPhI
- Issue: Vol 50, No 12 (2016)
- Pages: 1641-1646
- Section: XX International Symposium “Nanophysics and Nanoelectronics”, Nizhny Novgorod, March 14–18, 2016
- URL: https://journals.rcsi.science/1063-7826/article/view/198950
- DOI: https://doi.org/10.1134/S1063782616120071
- ID: 198950
Cite item
Abstract
The longitudinal and Hall magnetoresistances are measured in the quantum Hall effect regime in the n-InGaAs/InAlAs heterostructures at temperatures of T = (1.8–30) K in magnetic fields up to B = 9 T. Temperature-induced transport in the region of the longitudinal resistance minima, corresponding to the plateau regions at Hall resistance, is investigated within the framework of the concept of hopping conductivity in a strongly localized electron system. The analysis of variable-range hopping conductivity in the region of the second, third, and fourth plateau of the quantum Hall effect provides the possibility of determining the localization length exponent.
About the authors
S. V. Gudina
Mikheev Institute of Metal Physics, Ural Branch
Author for correspondence.
Email: svpopova@imp.uran.ru
Russian Federation, Yekaterinburg, 620137
Yu. G. Arapov
Mikheev Institute of Metal Physics, Ural Branch
Email: svpopova@imp.uran.ru
Russian Federation, Yekaterinburg, 620137
A. P. Saveliev
Mikheev Institute of Metal Physics, Ural Branch
Email: svpopova@imp.uran.ru
Russian Federation, Yekaterinburg, 620137
V. N. Neverov
Mikheev Institute of Metal Physics, Ural Branch
Email: svpopova@imp.uran.ru
Russian Federation, Yekaterinburg, 620137
S. M. Podgornykh
Mikheev Institute of Metal Physics, Ural Branch; Yeltsin Ural Federal University
Email: svpopova@imp.uran.ru
Russian Federation, Yekaterinburg, 620137; Yekaterinburg, 620002
N. G. Shelushinina
Mikheev Institute of Metal Physics, Ural Branch
Email: svpopova@imp.uran.ru
Russian Federation, Yekaterinburg, 620137
M. V. Yakunin
Mikheev Institute of Metal Physics, Ural Branch; Yeltsin Ural Federal University
Email: svpopova@imp.uran.ru
Russian Federation, Yekaterinburg, 620137; Yekaterinburg, 620002
I. S. Vasil’evskii
National Research Nuclear University MEPhI
Email: svpopova@imp.uran.ru
Russian Federation, Moscow, 115409
A. N. Vinichenko
National Research Nuclear University MEPhI
Email: svpopova@imp.uran.ru
Russian Federation, Moscow, 115409