Magnetic dephasing in mesoscopic spin glasses

Magnetic dephasing in mesoscopic spin glasses

We have measured universal conductance fluctuations in the metallic spin glass Ag:Mn as a function of temperature and magnetic field. From this measurement, we can access the phase coherence time of the electrons in the spin glass. We show that this phase coherence time increases with both the inver...

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Veröffentlicht in:Physical review letters 2013-10, Vol.111 (18), p.187203-187203, Article 187203
Hauptverfasser: Capron, Thibaut, Forestier, Guillaume, Perrat-Mabilon, Angela, Peaucelle, Christophe, Meunier, Tristan, Bäuerle, Christopher, Lévy, Laurent P, Carpentier, David, Saminadayar, Laurent
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Condensed Matter
Mesoscopic Systems and Quantum Hall Effect
Physics
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container_end_page 187203
container_issue 18
container_start_page 187203
container_title Physical review letters
container_volume 111
creator Capron, Thibaut
Forestier, Guillaume
Perrat-Mabilon, Angela
Peaucelle, Christophe
Meunier, Tristan
Bäuerle, Christopher
Lévy, Laurent P
Carpentier, David
Saminadayar, Laurent
description We have measured universal conductance fluctuations in the metallic spin glass Ag:Mn as a function of temperature and magnetic field. From this measurement, we can access the phase coherence time of the electrons in the spin glass. We show that this phase coherence time increases with both the inverse of the temperature and the magnetic field. From this, we deduce that decoherence mechanisms are still active even deep in the spin glass phase.
doi_str_mv 10.1103/physrevlett.111.187203
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subjects Condensed Matter
Mesoscopic Systems and Quantum Hall Effect
Physics
title Magnetic dephasing in mesoscopic spin glasses
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