Peculiarities of quantum magnetotransport in In₀.₅₃Ga₀.₄₇As/In₀.₅₂Al₀.₄₈As heterostructures grown on (100) InP

Przesławski, T.

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Peculiarities of quantum magnetotransport in In₀.₅₃Ga₀.₄₇As/In₀.₅₂Al₀.₄₈As heterostructures grown on (100) InP

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Przesławski T.

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Abstrakty

Magnetotransport properties of the Si δ- doped In₀.₅₃Ga₀.₄₇As/In₀.₅₂Al₀.₄₈As heterostructures grown on (100)InP substrates were investigated by performing classical Van der Pauw Hall effect as well as high field quantum magnetotransport measurements. The results of the conventional Hall measurements are ambiguous because the mobility obtained at liquid helium occurred to be smaller than at room temperature. The qualitative analysis of the conductivity tensor revealed at least two conducting channels. Thus, the properties of whole structure are limited by the low mobility of the parasitic parallel conduction layer. On the other hand, the fast Fourier transform of the quantum magnetooscillations consists of a lot of frequencies. None of them can not be attributed to the presence of the two-dimensional electron gas (2DEG) in a single quantum well. We interpret our rich Fourier spectrum as due to quantum interference (QI) between open electron path commonly found in superlattices structures.

Słowa kluczowe

magnetotransport Hall effect helium

magnetotransport efekt Halla hel

Wydawca

Institute of Electron Technology

Czasopismo

Electron Technology : Internet Journal

Rocznik

2007

Tom

Vol. 39, nr 2

Strony

1--3

Opis fizyczny

Bibliogr. 5 poz.

Twórcy

autor

Przesławski T.

Institute of Electron Technology, al. Lotników 32/46, 02-668 Warszawa, Poland

Bibliografia

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