Magnetic Field Dependence of the Conduction Electron Mass in Praseodymium

  • Peter Fulde
  • R. M. White


Recent low temperature specific heat experiments by Forgan1 have revealed that Pr metal has an anomalously large conduction electron effective mass m* Furthermore, when a magnetic field was applied, m* was found to decrease considerably. The measurements suggest that both effects are connected with the presence of 4f electrons in Pr as they are found to be absent in La. We want to show in the following that they can be understood when the contribution of the magnetic excitons to the conduction electron mass is taken into account. While contributions of phonons or paramagnons to the conduction electron mass in paramagnetic metals are well recognized it seems to us that the experiments by Forgan demonstrate for the first time an analogous contribution of the coupled crystalline electric field (CEF) excitations.


Conduction Electron Spin Wave Magnetic Field Dependence Susceptibility Tensor Paramagnetic Metal 
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Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • Peter Fulde
    • 1
  • R. M. White
    • 2
  1. 1.Max-Planck-Institut für FestkörperforschungFed. Republic of Germany
  2. 2.Xerox Research CenterPalo AltoUSA

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