Magnetocapacitance: A probe of spin-dependent potentials

Details Magnetocapacitance: A probe of spin-dependent potentials Magnetocapacitance: A probe of spin-dependent potentials

2002-06-22

arxiv.org/abs/cond-mat/0206427v1

Physics

Condensed Matter

Materials Science

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.90.117201

The magnetic field dependence of the capacitance of Pd-AlOx-Al thin-film structures has been measured. The observed quadratic dependence of capacitance on magnetic field is consistent with a theoretical model that includes the effect of a spin-dependent electrochemical potential on electron screening in the paramagnetic Pd. This spin-dependent electrochemical potential is related to the Zeeman splitting of the narrow d-bands in Pd. The quantitative details depend on the electronic band structure at the surface of Pd.

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