Evidence for the microscopic coexistence of superconductivity and ferromagnetism in UGe2:73Ge-NMR/NQR study

A. Harada, H. Kotegawa, Y. Kawasaki, G. Q. Zheng, Y. Kitaoka, E. Yamamoto, Y. Haga, Y. Onuki, K. Itoh, E. E. Haller

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We report on the pressure-induced novel phases of ferromagnetism and superconductivity (SC) in the itinerant ferromagnet UGe2 via the 73Ge-NQR measurements under pressure (P). The NQR spectrum has revealed that the ferromagnetic phases are separated into weakly and strongly polarized phases around a critical value of Pc*∼1.2GPa, pointing to a first-order transition around Pc*. Here we present further evidence for the phase separation into ferromagnetic and paramagnetic phases around a critical pressure Pc∼1.6GPa. The measurements of nuclear spin-lattice relaxation rate 1/T1 have probed that SC sets only in the ferromagnetic phase at Tsc∼0.2K, but it does not in the paramagnetic phase.

Original languageEnglish
Pages (from-to)1057-1059
Number of pages3
JournalPhysica B: Condensed Matter
Volume359-361
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2005 Apr 30

Keywords

  • Ferromagnetism
  • NMR/NQR
  • Superconductivity
  • UGe

ASJC Scopus subject areas

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

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    Harada, A., Kotegawa, H., Kawasaki, Y., Zheng, G. Q., Kitaoka, Y., Yamamoto, E., Haga, Y., Onuki, Y., Itoh, K., & Haller, E. E. (2005). Evidence for the microscopic coexistence of superconductivity and ferromagnetism in UGe2:73Ge-NMR/NQR study. Physica B: Condensed Matter, 359-361(SPEC. ISS.), 1057-1059. https://doi.org/10.1016/j.physb.2005.01.283