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Stray-field-induced modification of coherent spin dynamics.

Stray-field-induced modification of coherent spin dynamics.

Authors :
Meier, L.
Salis, G.
Ellenberger, C.
Gini, E.
Ensslin, K.
Source :
AIP Conference Proceedings. 2007, Vol. 893 Issue 1, p1365-1366. 2p. 2 Graphs.
Publication Year :
2007

Abstract

Electron spins in an InGaAs semiconductor quantum well are used as a magnetometer of magnetic stray fields from an array of Fe bars. Using time-resolved Faraday rotation, the coherent precession of quantum-well spins in the inhomogeneous field between the Fe bars is measured for varying external magnetic fields and different geometries of the Fe bars. Compared with reference stripes made of Au, we find an enhancement of the spin precession frequency proportional to the Fe magnetization, in line with a decrease of the spin decay time, which is attributed to the inhomogeneous magnetic stray field in the quantum-well layer. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
0094243X
Volume :
893
Issue :
1
Database :
Academic Search Index
Journal :
AIP Conference Proceedings
Publication Type :
Conference
Accession number :
24986020
Full Text :
https://doi.org/10.1063/1.2730411