Multiple harmonic spectroscopy, spin orientation and instantaneous magnetization using light

• Grant number: 10/10452-8
• Support Opportunities: Regular Research Grants
• Start date: December 01, 2010
• End date: November 30, 2012
• 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

Magnetic semiconductors, with a potential for application in spintronics, will be investigated by spectroscopy of multiple harmonics. The same materials will be investigated to establish the ideal conditions for control of the light induced magnetization, which is a consequence of one of two possible processes: (1) instant magnetization, which persists only while the material is illuminated by the exciting light (the inverse Faraday effect); (2) optical spin orientation, which produces a magnetization which persists even after the excitation light has been terminated. The dynamics of these processes will also be investigated. Spin manipulation via the application of electric fields will also be investigated. (AU)

Scientific publications

(7)

(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)

KEIZER, J. G.; HENRIQUES, A. B.; MAIA, A. D. B.; QUIVY, A. A.; KOENRAAD, P. M.. Atomically resolved study of the morphology change of InAs/GaAs quantum dot layers induced by rapid thermal annealing. Applied Physics Letters, v. 101, n. 24, DEC 10 2012. (10/10452-8)

HENRIQUES, A. B.; SCHWAN, A.; VARWIG, S.; MAIA, A. D. B.; QUIVY, A. A.; YAKOVLEV, D. R.; BAYER, M.. Spin coherence generation in negatively charged self-assembled (In,Ga)As quantum dots by pumping excited trion states. Physical Review B, v. 86, n. 11, SEP 28 2012. (10/10452-8)

SCHWAN‚ A.; MEINERS‚ B.M.; GREILICH‚ A.; YAKOVLEV‚ DR; BAYER‚ M.; MAIA‚ ADB; QUIVY‚ AA; HENRIQUES‚ AB. Anisotropy of electron and hole g-factors in (In‚ Ga) As quantum dots. Applied Physics Letters, v. 99, n. 22, p. 221914-221914, 2011. (10/10452-8)

SCHWAN, A.; MEINERS, B-M.; HENRIQUES, A. B.; MAIA, A. D. B.; QUIVY, A. A.; SPATZEK, S.; VARWIG, S.; YAKOVLEV, D. R.; BAYER, M.. Dispersion of electron g-factor with optical transition energy in (In,Ga)As/GaAs self-assembled quantum dots. Applied Physics Letters, v. 98, n. 23, JUN 6 2011. (09/16912-3, 10/10452-8)

LAFRENTZ, M.; BRUNNE, D.; KAMINSKI, B.; PAVLOV, V. V.; PISAREV, R. V.; HENRIQUES, A. B.; YAKOVLEV, D. R.; SPRINGHOLZ, G.; BAUER, G.; BAYER, M.. Optical third harmonic generation in the magnetic semiconductor EuSe. Physical Review B, v. 85, n. 3, JAN 17 2012. (10/10452-8)

SCHWAN, A.; MEINERS, B. -M.; GREILICH, A.; YAKOVLEV, D. R.; BAYER, M.; MAIA, A. D. B.; QUIVY, A. A.; HENRIQUES, A. B.. Anisotropy of electron and hole g-factors in (In,Ga)As quantum dots. Applied Physics Letters, v. 99, n. 22, NOV 28 2011. (10/10452-8)

HENRIQUES, A. B.; ABRAMOF, E.; RAPPL, P. H. O.; GALGANO, G. D.; IHN, T; ROSSLER, C; KOZIKOV, A. Optically induced magnetic polarons in EuTe. PHYSICS OF SEMICONDUCTORS, v. 1566, p. 2-pg., 2013-01-01. (10/10452-8)