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http://hdl.handle.net/2445/10873
Title: | Relaxation and Landau-Zener experiments down to 100 mK in Ferritin |
Author: | Durán, M. Barco, Enrique del, 1968- Hernández Ferràs, Joan Manel Tejada Palacios, Javier |
Keywords: | Propietats magnètiques Relaxació magnètica Magnetic properties Magnetic relaxation |
Issue Date: | 2002 |
Publisher: | The American Physical Society |
Abstract: | Temperature-independent magnetic viscosity in ferritin has been observed from 2 K down to 100 mK, proving that quantum tunneling plays the main role in these particles at low temperature. Magnetic relaxation has also been studied using the Landau-Zener method making the system crossing zero resonant field at different rates, alpha=dH/dt, ranging from 10^{-5} to 10^{-3} T/s, and at different temperatures, from 150 mK up to the blocking temperature. We propose a new Tln(Delta H_{eff}/tau_0 alpha) scaling law for the Landau-Zener probability in a system distributed in volumes, where Delta H_{eff} is the effective width of the zero field resonance |
Note: | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.65.172401 |
It is part of: | Physical Review B, 2002, vol. 65, núm. 17, p. 172401-1-172401-4 |
URI: | http://hdl.handle.net/2445/10873 |
Related resource: | http://dx.doi.org/10.1103/PhysRevB.65.172401 |
ISSN: | 0163-1829 |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
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