| Issue |
Europhys. Lett.
Volume 38, Number 3, April III 1997
|
|
|---|---|---|
| Page(s) | 225 - 230 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1997-00229-y | |
| Published online | 01 September 2002 | |
High-field spin-polarization transition in the Landau bands of quasi-2D electron gases with strong lateral modulation
Laboratoire de Microstructures et de Microélectronique (L2M), CNRS, B.P. 107, 92225 Bagneux Cedex, France
Received:
6
January
1997
Accepted:
10
March
1997
2D electron gases, imbedded in a 1D lateral potential (in 
),
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 (
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.
PACS: 73.20.Dx – Electron states in low-dimensional structures (superlattices, quantum well structures and multilayers) / 71.70.Gm – Exchange interactions / 73.61.Ey – III-V semiconductors
© EDP Sciences, 1997
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