DHvA oscillation in the anisotropic superconductors of UPd2Al3 and URu2 Si2

Yoshihiko Inada, Yoshinori Haga, Hitoshi Ohkuni, Yoshihumi Tokiwa, Rikio Settai, Tetsuo Honma, Etuji Yamamoto, Yoshichika Onuki

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Abstract

UPd2Al3 and URu2Si2 are considered to be non-s-wave superconductors with an anisotropic energy gap from the NMR and specific heat measurements. We have succeeded in observing clearly the dHvA oscillation in both the normal and superconducting mixed states. The cyclotron mass is found to be reduced and the Dingle temperature increases in the mixed state. An anisotropic energy gap with a line node for UPd2Al3 and URu2Si2 was discussed from the angular dependence of the dHvA amplitude in the mixed state.

Original languageEnglish
Pages (from-to)523-524
Number of pages2
JournalPhysica B: Condensed Matter
Volume284-288
Issue numberPART I
DOIs
Publication statusPublished - Jan 1 2000
Externally publishedYes

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Keywords

  • Anisotropic superconductors
  • De Haas-van Alphen effect
  • Heavy fermions
  • UPdAl
  • URuSi

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Inada, Y., Haga, Y., Ohkuni, H., Tokiwa, Y., Settai, R., Honma, T., Yamamoto, E., & Onuki, Y. (2000). DHvA oscillation in the anisotropic superconductors of UPd2Al3 and URu2 Si2. Physica B: Condensed Matter, 284-288(PART I), 523-524. https://doi.org/10.1016/S0921-4526(99)02122-5