Nonuniversal Scaling Behavior of Conductivity Peak Widths in the Quantum Hall Effect in InGaAs/InAlAs Structures


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Resumo

The longitudinal ρxx and Hall ρxy resistances were measured in the region of the quantum phase transitions for the quantum Hall effect regime with magnetic fields up to 12 T at temperatures of T = 0.4–30 K in two-dimensional electron systems n-In0.9Ga0.1As/In0.81Al0.19As. The nonuniversal scaling behavior of the temperature dependence of the width of the resistance ρxx peaks related to the effect of the large-scale random potential and of Landau-level mixing with opposite spin directions was found.

Sobre autores

S. Gudina

Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

Autor responsável pela correspondência
Email: svpopova@imp.uran.ru
Rússia, Yekaterinburg, 620108

I. Vasil’evskii

National Research Nuclear University “MEPhI”

Email: svpopova@imp.uran.ru
Rússia, Moscow, 115409

M. Yakunin

Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Yeltsin Ural Federal University

Email: svpopova@imp.uran.ru
Rússia, Yekaterinburg, 620108; Yekaterinburg, 620002

N. Shelushinina

Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

Email: svpopova@imp.uran.ru
Rússia, Yekaterinburg, 620108

S. Podgornykh

Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Yeltsin Ural Federal University

Email: svpopova@imp.uran.ru
Rússia, Yekaterinburg, 620108; Yekaterinburg, 620002

A. Savelyev

Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

Email: svpopova@imp.uran.ru
Rússia, Yekaterinburg, 620108

V. Neverov

Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

Email: svpopova@imp.uran.ru
Rússia, Yekaterinburg, 620108

E. Ilchenko

Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

Email: svpopova@imp.uran.ru
Rússia, Yekaterinburg, 620108

Yu. Arapov

Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

Email: svpopova@imp.uran.ru
Rússia, Yekaterinburg, 620108

A. Vinichenko

National Research Nuclear University “MEPhI”

Email: svpopova@imp.uran.ru
Rússia, Moscow, 115409


Declaração de direitos autorais © Pleiades Publishing, Ltd., 2018

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