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Influence of magnetic impurities on the heat capacity of nuclear spins

  • A. M. Dyugaev
  • Yu. N. Ovchinnikov
  • P. Fulde
Condensed Matter

Abstract

It is found that over a wide range of temperatures and magnetic fields even a small concentration of magnetic impurities in a sample leads to a T−1 temperature dependence of the nuclear heat capacity. This effect is due to nuclear spin polarization by the magnetic impurities. The parameter that controls the theory turns out not to be the impurity concentration nimp but instead the quantity nimpμ e /μ n , where μ e and μ n are the magnetic moments of an electron and a nucleus, respectively. The ratio of μ e and μ n is of order of 103.

PACS numbers

65.40.+g 75.40.Cx 75.30.Hx 75.25.+z 

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Copyright information

© MAIK "Nauka/Interperiodica" 1997

Authors and Affiliations

  • A. M. Dyugaev
    • 1
    • 2
  • Yu. N. Ovchinnikov
    • 1
    • 2
  • P. Fulde
    • 1
  1. 1.Max-Planck-Institute for Physics of Complex SystemsDresdenGermany
  2. 2.L. D. Landau Institute of Theoretical PhysicsRussian Academy of SciencesMoscowRussia

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