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

A. Harada, H. Kotegawa, Y. Kawasaki, Guo-Qing 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 - Apr 30 2005
Externally publishedYes

Fingerprint

Ferromagnetism
Superconductivity
ferromagnetism
superconductivity
Nuclear magnetic resonance
nuclear magnetic resonance
critical pressure
spin-lattice relaxation
nuclear spin
Spin-lattice relaxation
Phase separation

Keywords

  • Ferromagnetism
  • NMR/NQR
  • Superconductivity
  • UGe

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Harada, A., Kotegawa, H., Kawasaki, Y., Zheng, G-Q., Kitaoka, Y., Yamamoto, E., ... 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

Evidence for the microscopic coexistence of superconductivity and ferromagnetism in UGe2 : 73Ge-NMR/NQR study. / Harada, A.; Kotegawa, H.; Kawasaki, Y.; Zheng, Guo-Qing; Kitaoka, Y.; Yamamoto, E.; Haga, Y.; Onuki, Y.; Itoh, K.; Haller, E. E.

In: Physica B: Condensed Matter, Vol. 359-361, No. SPEC. ISS., 30.04.2005, p. 1057-1059.

Research output: Contribution to journalArticle

Harada, A, Kotegawa, H, Kawasaki, Y, Zheng, G-Q, Kitaoka, Y, Yamamoto, E, Haga, Y, Onuki, Y, Itoh, K & Haller, EE 2005, 'Evidence for the microscopic coexistence of superconductivity and ferromagnetism in UGe2: 73Ge-NMR/NQR study', Physica B: Condensed Matter, vol. 359-361, no. SPEC. ISS., pp. 1057-1059. https://doi.org/10.1016/j.physb.2005.01.283
Harada, A. ; Kotegawa, H. ; Kawasaki, Y. ; Zheng, Guo-Qing ; Kitaoka, Y. ; Yamamoto, E. ; Haga, Y. ; Onuki, Y. ; Itoh, K. ; Haller, E. E. / Evidence for the microscopic coexistence of superconductivity and ferromagnetism in UGe2 : 73Ge-NMR/NQR study. In: Physica B: Condensed Matter. 2005 ; Vol. 359-361, No. SPEC. ISS. pp. 1057-1059.
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