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arXiv 1304.0171cond-mat.mes-hall
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介观自旋玻璃中的磁退相

Magnetic dephasing in mesoscopic spin glasses

Thibaut Capron, Guillaume Forestier, Angela Perrat-Mabilon, Christophe Peaucelle, Tristan Meunier, Christopher Bäuerle, Laurent P. Lévy, David Carpentier, Laurent Saminadayar

摘要:

我们测量了金属自旋玻璃Ag:Mn中作为温度和磁场函数的普适电导涨落。通过这种测量,我们可以获得自旋玻璃中电子的相位相干时间。我们发现,这种相位相干时间的增加与温度和磁场的倒数。从这一点,我们推断,退相干机制仍然是活跃的,甚至在自旋玻璃相深处。

英文摘要:

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.

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