LIGHT-INDUCED MAGNETIC EXCHANGE-COUPLING

Authors
BRINER B LANDOLT M
Citation
B. Briner et M. Landolt, LIGHT-INDUCED MAGNETIC EXCHANGE-COUPLING, Zeitschrift fur Physik. B, Condensed matter, 92(2), 1993, pp. 137-139
Citations number
8
Categorie Soggetti
Physics, Condensed Matter
Journal title
Zeitschrift fur Physik. B, Condensed matter → ACNP
ISSN journal
07223277
Volume
92
Issue
2
Year of publication
1993
Pages
137 - 139
Database
ISI
SICI code
0722-3277(1993)92:2<137:LME>2.0.ZU;2-E
Abstract
We observe ferromagnetic exchange-coupling to be induced between thin Fe layers separated by an insulating SiO barrier upon light irradiatio n. Coupling can reversibly be switched on with photons of energies les s than the bandgap of SiO. We conclude that charge carriers in localiz ed states within the bandgap mediate the observed exchange-coupling. W e furthermore report that the exchange-coupling can also be turned off by irradiation with light of higher intensity.