Measuring overlaps in mesoscopic spin glasses via conductance fluctuations.
We consider the electronic transport in a mesoscopic metallic spin glass. We show that the distribution of overlaps between spin configurations can be inferred from the reduction of the conductance fluctuations by the magnetic impurities. Using this property, we propose new experimental protocols to probe spin glasses directly through their overlaps.
Carpentier
David
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CNRS UMR 5672 - Laboratoire de Physique de l'Ecole Normale Supérieure de Lyon, 46, Allée d'Italie, 69007 Lyon, France.
Orignac
Edmond
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