Theoretical investigation of the electron velocity in quantum Hall bars, in the out of linear response regime
Küçük Resim Yok
Tarih
2008
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
We report on our theoretical investigation of the electron velocity in (narrow) quantum Hall systems, considering the out-of-linear-response regime. The electrostatic properties of the electron system are obtained by the Thomas-Fermi-Poisson nonlinear screening theory. The electron velocity distribution as a function of the lateral coordinate is obtained from the slope of the screened potential within the incompressible strips (ISs). The asymmetry induced by the imposed current on the ISs is investigated, as a function of the current intensity and impurity concentration. We find that the width of the IS on one side of the sample increases linearly with the intensity of the applied current and decreases with the impurity concentration. (C) 2007 Elsevier B.V. All rights reserved.
Açıklama
17th International Conference on Electronic Properties of Two-Dimensional Systems -- JUL 15-20, 2007 -- Genoa, ITALY
Anahtar Kelimeler
Edge States, Quantum Hall Effect, Screening, Mach-Zehnder Interferometer
Kaynak
Physica E-Low-Dimensional Systems & Nanostructures
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
40
Sayı
5
