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Proceedings Paper

Ultrafast optical phenomena related to spin and orbital dynamics in the rare-earth cuprates R2CuO4 (R = Pr, Nd, Sm)
Author(s): Victor V. Pavlov; Valery N. Gridnev; Evgenie A. Zhukov; Dmitry R. Yakovlev; Manfred Bayer
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Paper Abstract

Currently coherent spin phenomena are in the focus of wide research activity in such multidisciplinary fields as spintronics, quantum communication and information processing.1-3 Among those, the optical orientation based on the transfer to media of the angular momentum carried by the circularly-polarized light plays very important role for disclosing basic processes that govern generation and relaxation of spin and orbital states. By using ultrafast pump-probe spectroscopy we show that optical pumping can induce spin-polarization in antiferromagnetic Mott insulators R2CuO4 (R = Pr, Nd, Sm) providing a way for fast nonlinear manipulation of spin states on time scale of 100 fs and less. The driving mechanisms of the ultrafast spin orientation and dynamics in Mott insulators are the strong spin-orbit, spin-phonon and exchange interaction as inherent features of strongly-correlated systems both in the ground and excited states. High values of the corresponding nonlinear susceptibilities may have significant impact for novel ultrafast all-optical technologies.

Paper Details

Date Published: 3 August 2007
PDF: 9 pages
Proc. SPIE 6729, ICONO 2007: Coherent and Nonlinear Optical Phenomena, 67290M (3 August 2007); doi: 10.1117/12.751988
Show Author Affiliations
Victor V. Pavlov, A.F. Ioffe Physico-Technical Institute (Russia)
Valery N. Gridnev, A.F. Ioffe Physico-Technical Institute (Russia)
Evgenie A. Zhukov, M.V. Lomonosov Moscow State Univ. (Russia)
Dmitry R. Yakovlev, A.F. Ioffe Physico-Technical Institute (Russia)
Dortmund Univ. (Germany)
Manfred Bayer, Dortmund Univ. (Germany)

Published in SPIE Proceedings Vol. 6729:
ICONO 2007: Coherent and Nonlinear Optical Phenomena
Vladimir N. Belyi; Konstantin N. Drabovich; Christos Flytzanis, Editor(s)

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