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Magnetic-field dependence of energy levels in ultrasmall metal grains

S. Adam·M. L. Polianski·X. Waintal·P. W. Brouwer
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Abstract

We present a theory of mesoscopic fluctuations of g tensors and avoided crossing energies in a small metal grain. The model, based on random matrix theory, contains both the orbital and spin contributions to the g tensor. The two contributions can be experimentally separated for weak spin-orbit coupling while they merge in the strong coupling limit. For intermediate coupling, substantial correlations are found between g factors of neighboring levels.

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S. Adam, M. L. Polianski, X. Waintal, P. W. Brouwer. 2002-06-19. Magnetic-field dependence of energy levels in ultrasmall metal grains. https://doi.org/10.1103/physrevb.66.195412

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