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Local Definition of Spin Polarization in a Semiconductor by Micro-scale Current Loops.
- Source :
-
Journal of Superconductivity & Novel Magnetism . Jan2010, Vol. 23 Issue 1, p111-114. 4p. 3 Graphs. - Publication Year :
- 2010
-
Abstract
- We present an approach to electrical control of the spin polarization in a diluted magnetic semiconductor (DMS) structure. A variable magnetic field induced by a micro-scale current loop magnetizes the Mn2+ ions in a CdMnTe/CdMgTe DMS quantum well, which via the sp-d exchange interaction polarizes photo-generated electron-hole pairs confined in the well. A maximum spin polarization degree of ±8.5% is obtained at 4.2 K without external magnetic field. The current-induced magnetic field and the current-generated heating of the spin system are quantitatively extracted by micro magneto-luminescence measurements. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15571939
- Volume :
- 23
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Superconductivity & Novel Magnetism
- Publication Type :
- Academic Journal
- Accession number :
- 46830858
- Full Text :
- https://doi.org/10.1007/s10948-009-0559-5