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Seminário de Física da Matéria Condensada

Meus caros,

Todos estão convidados para o seminário de física da matéria condensada na próxima 5a feira, 13/10, 11h00 na sala 528 da torre nova.

TÍTULO: Spin-Phonon Coupling: A Probe of Magnetism through Lattice Vibrations

Palestrante: Prof. Eduardo Granado (IFGW/UNICAMP)

RESUMO
Normal modes of vibration may produce a modulation of the interatomic exchange energy in magnetic materials, leading to phonon anomalies at temperatures where the spin correlations set in. This effect has been used as a probe of short-range spin correlations and the microscopic nature of exchange coupling of materials of interest. In this talk I will review some examples of successful application of this technique, including LaMnO3 and CaMnO3 manganites, RMn2O5 multiferroics, Ba2FeReO6 and Sr2FeCrO6 double perovskites and materials showing frustrated and/or low-dimensional magnetism.