Magnetotransport and Cyclotron Resonance Investigations of the 2D-Electron Gas in e-Beam Irradiated AlGaAs/GaAs Heterojunctions

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urn:nbn:de:bvb:355-epub-78530 Copy

Sigg, H. ; Weiss, Dieter ; Klitzing, Klaus von

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Date of publication of this fulltext: 05 Aug 2009 13:57

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Details

Item type:	Article
Journal or Publication Title:	Surface Science
Publisher:	Elsevier
Volume:	196
Page Range:	pp. 293-298
Date:	1988
Institutions:	Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss
Identification Number:	Value Type 10.1016/0039-6028(88)90697-8 DOI
Dewey Decimal Classification:	500 Science > 530 Physics
Status:	Published
Refereed:	Yes, this version has been refereed
Created at the University of Regensburg:	Unknown
Item ID:	7853

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Abstract

A 2D electron gas (2DEG) with a controlled density of repulsive scatters at the interface is obtained by irradiation of AlGaAs/GaAs heterojunctions with 1 MeV electrons. Measurements of the magnetotransport yield that the plateaus in the Hall resistance are at their quantized values Rxy = h/e2v (v is the integer filling factor) but show a significant broadening. The lineposition of the ...

Abstract

A 2D electron gas (2DEG) with a controlled density of repulsive scatters at the interface is obtained by irradiation of AlGaAs/GaAs heterojunctions with 1 MeV electrons. Measurements of the magnetotransport yield that the plateaus in the Hall resistance are at their quantized values Rxy = h/e2v (v is the integer filling factor) but show a significant broadening. The lineposition of the cyclotron resonance is found to be shifted to higher energies such that Full-size image with the energy before irradiation and . From the investigation on partially up to fully annealed samples we found that is proportional to nsc the density of scatters of the SDEG.

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