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Nuclear spin-electron coupling of copper at microkelvin temperatures

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Zeitschrift für Physik B Condensed Matter

Abstract

The nuclear spin-electron coupling of copper has been determined by establishing stationary temperature differences between nuclei and electrons at electronic temperatures of 15 μK to 5 mK in magnetic fields of 2 mT to 440 mT using a well-defined heat flow from the electrons to the nuclear spin system. The measured Korringa constantk increases proportional toB/T 2e with decreasing electronic temperatureT e and with increasing magnetic fieldB. At the lowest temperaturesk is more than an order of magnitude larger than its high temperature value.

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Author notes

  1. K. Gloos

    Present address: Low Temperature Laboratory, Helsinki University of Technology, SF-02150, Espoo, Finland

Authors and Affiliations

  1. Physikalisches Institut der Universität, Postfach 101251, W-8580, Bayreuth, Federal Republic of Germany

    K. Gloos, P. Smeibidl & F. Pobell

Authors
  1. K. Gloos
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  2. P. Smeibidl
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  3. F. Pobell
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Gloos, K., Smeibidl, P. & Pobell, F. Nuclear spin-electron coupling of copper at microkelvin temperatures. Z. Physik B - Condensed Matter 82, 227–231 (1991). https://doi.org/10.1007/BF01324331

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  • DOI: https://doi.org/10.1007/BF01324331

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