Pressure-induced superconductivity in UIr

Teruhiko Akazawa, Hiroyuki Hidaka, Hisashi Kotegawa, Tatsuo C. Kobayashi, Tabito Fujiwara, Etsuji Yamamoto, Yoshinori Haga, Rikio Settai, Yoshichika Onuki

Research output: Contribution to journalArticlepeer-review

139 Citations (Scopus)


Pressure-induced superconductivity is found in UIr without inversion symmetry. The pressure-temperature phase diagram has been investigated by means of the electrical resistivity and magnetization measurements under high pressure. The phase diagram consists of two magnetic phases, the Ising-like ferromagnetic phase (FM1) at low pressures and another magnetic phase (FM2) with the small ferromagnetic component along the [101] direction at high pressures. Superconductivity is observed in the narrow pressure range near the disappearance point of the FM2 phase, where the temperature dependence of resistivity follows the non-Fermi liquid form of T1.6. From these experimental facts, the superconductivity is considered to be associated with the critical fluctuation with the disappearance of FM2 phase.

Original languageEnglish
Pages (from-to)3129-3134
Number of pages6
Journaljournal of the physical society of japan
Issue number11
Publication statusPublished - Nov 2004


  • Critical fluctuation
  • Ferromagnetism
  • Inversion symmetry
  • Superconductivity
  • UIr

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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