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2002

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/10873

Relaxation and Landau-Zener experiments down to 100 mK in Ferritin

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http://dx.doi.org/10.1103/PhysRevB.65.172401

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

Subject

Propietats magnètiques, Relaxació magnètica

Subject (English)

Magnetic properties, Magnetic relaxation

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Articles publicats en revistes (Física de la Matèria Condensada)

Citation

DURÁN, M., et al. Relaxation and Landau-Zener experiments down to 100 mK in Ferritin. Physical Review B. 2002. Vol. 65, num. 17, pags. 172401-1-172401-4. ISSN 0163-1829. [consulted: 20 of August of 2026]. Available at: https://hdl.handle.net/2445/10873

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