Heat capacity of the pressure-induced superconductivity in itinerant ferromagnet UGe2

N. Tateiwa, T. C. Kobayashi, K. Amaya, Y. Haga, R. Settai, Y. Onuki

Research output: Contribution to journalConference article

8 Citations (Scopus)

Abstract

Recently, co-existence of the ferromagnetism and superconductivity was reported in the high-pressure region (1.0-1.6 GPa) in UGe2. We performed the heat capacity measurement on UGe2 under high pressure. At 1.15 GPa, we found a peak corresponding to the superconducting transition. The superconducting temperature TSC and ΔC/(γTSC) are 0.6 K and 0.25, respectively. The superconducting transition was also confirmed by the appearance of the Meissner effect in the AC susceptibility. From these results, we confirm a bulk nature of the superconductivity in UGe2. The value of C/T (∼95 mJ/molK2) just above TSC at 1.15 GPa is as much as 3 times larger than that at ambient pressure, which indicates a large mass enhancement of quasiparticles under high pressure.

Original languageEnglish
Pages (from-to)109-111
Number of pages3
JournalPhysica B: Condensed Matter
Volume312-313
DOIs
Publication statusPublished - Mar 1 2002
Externally publishedYes
EventInternational Conference on Strongly Correlated Electrons - Ann Arbor, MI, United States
Duration: Aug 6 2002Aug 6 2002

Keywords

  • Ferromagnetism
  • Superconductivity
  • UGe

ASJC Scopus subject areas

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

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