Coherently photoinduced ferromagnetism in diluted magnetic semiconductors

Ferromagnetism is predicted in undoped diluted magnetic semiconductors illuminated by intense sub-band-gap laser radiation. The mechanism for photoinduced ferromagnetism is coherence between conduction and valence bands induced by the light which leads to an optical exchange interaction. The ferroma...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2004-09, Vol.93 (12), p.127201.1-127201.4, Article 127201
Main Authors: FERNANDEZ-ROSSIER, J, PIERMAROCCHI, C, CHEN, P, MACDONALD, A. H, SHAM, L. J
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Magnetic semiconductors
Physics
Studies of specific magnetic materials
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Ferromagnetism is predicted in undoped diluted magnetic semiconductors illuminated by intense sub-band-gap laser radiation. The mechanism for photoinduced ferromagnetism is coherence between conduction and valence bands induced by the light which leads to an optical exchange interaction. The ferromagnetic critical temperature T(C) depends both on the properties of the material and on the frequency and intensity of the laser and could be above 1K.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.93.127201