Role of surface anisotropy for magnetic impurities in electron dephasing and energy relaxation and their size effect

O. Újsághy, A. Jakovác, A. Zawadowski

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Abstract

The role of surface anisotropy in electron dephasing and energy relaxation due to different magnetic impurities in thin wires was investigated. The dephasing and energy relaxation were found to be influenced by the surface anisotropy in different ways for integer spin having a singlet ground state. In the first case for low temperature and thermal equilibrium, the spin dynamics and dephasing are frozen out while dephasing can reenter in the out-of-equilibrium metallic wire experiments. The results show a pronounced size dependence and different concentration for magnetic impurities in the dephasing and out-of-equilibrium wire experiments.

Original languageEnglish
Article number256805
JournalPhysical Review Letters
Volume93
Issue number25
DOIs
Publication statusPublished - Dec 17 2004

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wire
impurities
anisotropy
electrons
spin dynamics
integers
energy
ground state

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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abstract = "The role of surface anisotropy in electron dephasing and energy relaxation due to different magnetic impurities in thin wires was investigated. The dephasing and energy relaxation were found to be influenced by the surface anisotropy in different ways for integer spin having a singlet ground state. In the first case for low temperature and thermal equilibrium, the spin dynamics and dephasing are frozen out while dephasing can reenter in the out-of-equilibrium metallic wire experiments. The results show a pronounced size dependence and different concentration for magnetic impurities in the dephasing and out-of-equilibrium wire experiments.",
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AU - Jakovác, A.

AU - Zawadowski, A.

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N2 - The role of surface anisotropy in electron dephasing and energy relaxation due to different magnetic impurities in thin wires was investigated. The dephasing and energy relaxation were found to be influenced by the surface anisotropy in different ways for integer spin having a singlet ground state. In the first case for low temperature and thermal equilibrium, the spin dynamics and dephasing are frozen out while dephasing can reenter in the out-of-equilibrium metallic wire experiments. The results show a pronounced size dependence and different concentration for magnetic impurities in the dephasing and out-of-equilibrium wire experiments.

AB - The role of surface anisotropy in electron dephasing and energy relaxation due to different magnetic impurities in thin wires was investigated. The dephasing and energy relaxation were found to be influenced by the surface anisotropy in different ways for integer spin having a singlet ground state. In the first case for low temperature and thermal equilibrium, the spin dynamics and dephasing are frozen out while dephasing can reenter in the out-of-equilibrium metallic wire experiments. The results show a pronounced size dependence and different concentration for magnetic impurities in the dephasing and out-of-equilibrium wire experiments.

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