Optically induced magnetic polarons in EuTe

Direct measurements of the photoinduced magnetization in EuTe, using a two color pump-and-probe technique, are presented. The photoinduced effect was pumped using photons of above-the-bandgap energy, and detected by the Faraday rotation of a probe beam of energy below-the-bandgap. The photoinduced F...

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Bibliographic Details
Main Authors: Henriques, A B, Abramof, E, Rappl P H O, Galgano, G D
Format: Conference Proceeding
Language:English
Subjects:
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Energy gap
EUROPIUM TELLURIDES
FARADAY EFFECT
MAGNETIZATION
PHOTONS
POLARONS
Rotation
SPIN
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Summary:Direct measurements of the photoinduced magnetization in EuTe, using a two color pump-and-probe technique, are presented. The photoinduced effect was pumped using photons of above-the-bandgap energy, and detected by the Faraday rotation of a probe beam of energy below-the-bandgap. The photoinduced Faraday rotation changes sign, as expected from our model for the optically induced magnetic polaron. The EuTe spin-flop transition at low fields is also detected as a sharp step in the photoinduced Faraday rotation, and its observation provides additional supports for the photoinduced polaron model.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4848431