Optical detection and control of magnetism in magnetic semiconductors and quantum dots

• Grant number: 08/09753-3
• Support Opportunities: Regular Research Grants
• Start date: March 01, 2009
• End date: May 31, 2011
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Andre Bohomoletz Henriques
• Grantee: Andre Bohomoletz Henriques
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

Semiconductor materials with a potential for application in spintronics will be investigated by optical and magneto-optical techniques. The experiments include photoluminescence, photoluminescence excitation, optical absorption and transmission, reflectivity, magnetic dichroism and high resolution Faraday rotation, both in the continuous regime and in the time-resolved regime, with a resolution in the femtosecond range. The materials studied are magnetic semiconductor quantum structures, both magnetic and non-magnetic: bulk materials, and nanostructures (quantum wells and dots), of composition: europium chalcogenides and III-V's. The research aims at detecting and controlling the electronic and lattice magnetism by the use of light. (AU)

Scientific publications

(6)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

HENRIQUES, A. B.; ABRAMOF, E.; RAPPL, P. H. O.. Theory of near-gap second harmonic generation in centrosymmetric magnetic semiconductors: Europium chalcogenides. Physical Review B, v. 80, n. 24, DEC 2009. (08/09753-3)

KAMINSKI, B.; LAFRENTZ, M.; PISAREV, R. V.; YAKOVLEV, D. R.; PAVLOV, V. V.; LUKOSHKIN, V. A.; HENRIQUES, A. B.; SPRINGHOLZ, G.; BAUER, G.; ABRAMOF, E.; et al. Optical second harmonic generation in the centrosymmetric magnetic semiconductors EuTe and EuSe. Physical Review B, v. 81, n. 15, APR 15 2010. (08/09753-3)

HENRIQUES, A. B.; EFROS, AL. L.. Magnetoconfined levels in a parabolic quantum dot: An analytical solution of a three-dimensional Fock-Darwin problem in a tilted magnetic field. Physical Review B, v. 80, n. 15, OCT 2009. (08/09753-3)

HENRIQUES, A. B.; GALGANO, G. D.; ABRAMOF, E.; DIAZ, B.; RAPPL, P. H. O.. Zero-phonon emission and magnetic polaron parameters in EuTe. Applied Physics Letters, v. 99, n. 9, AUG 29 2011. (08/09753-3)

LAFRENTZ, M.; BRUNNE, D.; KAMINSKI, B.; PAVLOV, V. V.; HENRIQUES, A. B.; PISAREV, R. V.; YAKOVLEV, D. R.; SPRINGHOLZ, G.; BAUER, G.; ABRAMOF, E.; et al. Optical third-harmonic spectroscopy of the magnetic semiconductor EuTe. Physical Review B, v. 82, n. 23, DEC 13 2010. (08/09753-3)

KAMINSKI, B.; LAFRENTZ, M.; PISAREV, R. V.; YAKOVLEV, D. R.; PAVLOV, V. V.; LUKOSHKIN, V. A.; HENRIQUES, A. B.; SPRINGHOLZ, G.; BAUER, G.; ABRAMOF, E.; et al. Spin-Induced Optical Second Harmonic Generation in the Centrosymmetric Magnetic Semiconductors EuTe and EuSe. Physical Review Letters, v. 103, n. 5, JUL 31 2009. (08/09753-3)