The de Haas van Alphen effect in CeMIn5 (where M = Rh and Co)


HALL D., MURPHY T., PALM E., TOZER S., FISK Z., HARRISON N., ...More

INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol.16, pp.3004-3007, 2002 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 16
  • Publication Date: 2002
  • Doi Number: 10.1142/s0217979202013432
  • Title of Journal : INTERNATIONAL JOURNAL OF MODERN PHYSICS B
  • Page Numbers: pp.3004-3007

Abstract

To understand the electronic structure of the heavy fermion superconductors CeMIn5, we have performed a comprehensive magnetic study of these materials.(1-4) Our quantum oscillation studies reveal that the Fermi surface becomes systematically more 2-d (and displays heavier effective masses) as one progresses from M=Rh to M=Ir to M=Co, consistent with the observed increase in superconducting T-c. Furthermore, dilution studies show that the f-electrons in CeRhIn5 are substantially localized whereas in CeIrIn5 and CeCoIn5 a more itinerant character is observed.