Article

Journal of Low Temperature Physics

, Volume 44, Issue 5, pp 553-568

Observation of the coexistence of superconductivity and long-range magnetic order in TmRh4B4

  • H. C. HamakerAffiliated withInstitute for Pure and Applied Physical Sciences, University of California—San Diego
  • , H. B. MacKayAffiliated withInstitute for Pure and Applied Physical Sciences, University of California—San Diego
  • , M. S. TorikachviliAffiliated withInstitute for Pure and Applied Physical Sciences, University of California—San Diego
  • , L. D. WoolfAffiliated withInstitute for Pure and Applied Physical Sciences, University of California—San Diego
  • , M. B. MapleAffiliated withInstitute for Pure and Applied Physical Sciences, University of California—San Diego
  • , W. OdoniAffiliated withLaboratorium für Festkörperphysik
  • , H. R. OttAffiliated withLaboratorium für Festkörperphysik

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The ac electrical resistance, heat capacity, static magnetic susceptibility, thermal conductivity, and linear thermal expansion coefficient have been measured for the superconducting ternary compound TmRh4B4. The results indicate that the Tm3+ magnetic moments order at about 0.4 K, while bulk superconductivity, which occurs at 9.8 K, persists to temperatures below 60 mK, which was the low-temperature limit of the apparatus. Various possibilities for the type of magnetic order are examined.