High-field spin-polarization transition in the Landau bands of quasi-2D electron gases with strong lateral modulation

Petit, Florent and Sfaxi, Larbi and Lelarge, Francois and Cavanna, A and Hayne, M and Etienne, Bernard (1997) High-field spin-polarization transition in the Landau bands of quasi-2D electron gases with strong lateral modulation. EPL, 38 (3). pp. 225-230. ISSN 0295-5075

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Abstract

2D electron gases, imbedded in a 1D lateral potential (in AlxGa1-xAs), made by a periodic modulation in alloy composition, are obtained by organized epitaxy on vicinal surfaces. The exchange enhancement of the Landau level spin splitting is inhibited up to a strong magnetic field (similar to 6T here). Low-temperature magneto-transport data revealing this effect cannot be explained by disorder but are fully consistent with the large potential gradients associated with the modulation amplitude.

Item Type:
Journal Article
Journal or Publication Title:
EPL
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
51973
Deposited By:
Deposited On:
09 Dec 2011 14:30
Refereed?:
Yes
Published?:
Published
Last Modified:
15 Apr 2020 02:03