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Mesoscopic Spin-Magnetism

H. Mathur·M. Gokcedag·A. Douglas Stone
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Abstract

We investigate the spin-magnetism of mesoscopic metallic grains. In the average response of an ensemble of grains there are corrections to macroscopic behaviour due to both spectral fluctuations and electron-electron interactions. These corrections are a non-linear function of the magnetic field. Their temperature dependence is calculated numerically and analytically. An experiment is proposed to measure the unknown interaction coupling constant in the cooper channel. For a single sample the magnetization is found to fluctuate reproducibly about the mean. These fluctuations directly probe the energy level statistics.

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H. Mathur, M. Gokcedag, A. Douglas Stone. 1994-11-03. Mesoscopic Spin-Magnetism. https://doi.org/10.1103/physrevlett.74.1855

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