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Magnetic field effects in the onset of superconductivity

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Zeitschrift für Physik A Hadrons and nuclei

Abstract

Using the time dependent Ginzburg-Landau theory the influence of a finite and even strong magnetic field on the fluctuations in superconductors aboveT c is studied. We calculate the dynamical conductivity, the Hall angle, and the static magnetisation from the fluctuations of the charge current associated with the fluctuations of the order parameter. It is found that the magnetic field generally enhances the singular contributions of the fluctuations to the conductivity and the susceptibility. Associated with this enhancement is a reduction of the characteristic frequency scale close toT c .

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Authors and Affiliations

  1. Institut Max von Laue-Paul Langevin, Garching, Germany

    Hans-Jürgen Mikeska & Hartwig Schmidt

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  1. Hans-Jürgen Mikeska
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  2. Hartwig Schmidt
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Additional information

We are indebted to Prof. R. E. Range and Dr. K. D. Usadel for providing us with preprints of their work.

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Mikeska, HJ., Schmidt, H. Magnetic field effects in the onset of superconductivity. Z. Physik 230, 239–254 (1970). https://doi.org/10.1007/BF01394689

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  • DOI: https://doi.org/10.1007/BF01394689

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