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Title: Spin-phonon avalanches in Mn-12 acetate
Author: Barco, Enrique del, 1968-
Hernández Ferràs, Joan Manel
Sales i Pardo, Marta
Tejada Palacios, Javier
Chudnovsky, Eugene M., 1948-
Broto, Jean-Marc
Rakoto, H.
Keywords: Materials magnètics
Relaxació magnètica
Propietats magnètiques
Spin (Física nuclear)
Magnetic materials
Magnetic relaxation
Spin (Nuclear physics)
Magnetic properties
Issue Date: 1999
Publisher: The American Physical Society
Abstract: We report experimental studies and suggest a quantitative model of spin relaxation in Mn12 acetate in a pulsed magnetic field in the temperature range 1.95.0 K. When the field applied along the anisotropy axis is swept at 140 T/s through a nonmagnetized Mn12 acetate sample, the samples magnetization switches, within a few milliseconds, from zero to saturation at a well-defined field whose value depends on temperature but is quantized in units of 0.46 T. A quantitative explanation of the effect is given in terms of a spin-phonon avalanche combined with thermally assisted resonant spin tunneling.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review B, 1999, vol. 60, núm. 17, p. 11898-11901
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ISSN: 0163-1829
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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