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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Zero-phonon emission and magnetic polaron parameters in EuTe

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Henriques, A. B. [1] ; Galgano, G. D. [1] ; Abramof, E. [2] ; Diaz, B. [2] ; Rappl, P. H. O. [2]
Total Authors: 5
[1] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo - Brazil
[2] LAS INPE, BR-12227010 Sao Jose Dos Campos - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Applied Physics Letters; v. 99, n. 9 AUG 29 2011.
Web of Science Citations: 7

A phonon structure in the photoluminescence of EuTe was discovered, with a well-defined zero-phonon emission line (ZPL). The ZPL redshifts linearly with the intensity of applied magnetic field, indicating spin relaxation of the photoexcited electron, and saturates at a lower magnetic field than the optical absorption bandgap, which is attributed to formation of magnetic polarons. From the difference in these saturation fields, the zero-field polaron binding energy and radius are estimated to be 43 meV and 3.2 (in units of the EuTe lattice parameter), respectively. (C) 2011 American Institute of Physics. {[}doi:10.1063/1.3634030] (AU)

FAPESP's process: 08/09753-3 - Optical detection and control of magnetism in magnetic semiconductors and quantum dots
Grantee:Andre Bohomoletz Henriques
Support type: Regular Research Grants