Cooperative phenomenon of ferromagnetism and unconventional superconductivity in UGe2: A 73Ge-NQR study under pressure

A. Harada; S. Kawasaki; H. Kotegawa; Y. Kitaoka; Y. Haga; E. Yamamoto; Y. Onuki; K. M. Itoh; E. E. Haller; H. Harima

doi:10.1143/JPSJ.74.2675

Cooperative phenomenon of ferromagnetism and unconventional superconductivity in UGe₂: A ⁷³Ge-NQR study under pressure

A. Harada, S. Kawasaki, H. Kotegawa, Y. Kitaoka, Y. Haga, E. Yamamoto, Y. Onuki, K. M. Itoh, E. E. Haller, H. Harima

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

We report on a cooperative phenomenon of ferromagnetism and unconventional superconductivity (SC) in UGe₂ through the measurements of ⁷³Ge nuclear-quadrupole-resonance (NQR) under pressure (P). The NQR spectra evidenced phase separation into ferromagnetic and paramagnetic phases in the vicinity of P_c ∼ 1.5 GPa, pointing to a first-order transition. The measurements of nuclear-spin-lattice-relaxation-rate 1/T ₁ revealed that SC emerges under the background of ferromagnetism, but not of the paramagnetic phase.

Original language	English
Pages (from-to)	2675-2678
Number of pages	4
Journal	journal of the physical society of japan
Volume	74
Issue number	10
DOIs	https://doi.org/10.1143/JPSJ.74.2675
Publication status	Published - Oct 2005
Externally published	Yes

Keywords

First-order phase transition
Itinerant ferromagnetism
NQR under pressure
UGe
Unconventional superconductivity

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.74.2675

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Cooperative phenomenon of ferromagnetism and unconventional superconductivity in UGe₂ : A ⁷³Ge-NQR study under pressure. / Harada, A.; Kawasaki, S.; Kotegawa, H.; Kitaoka, Y.; Haga, Y.; Yamamoto, E.; Onuki, Y.; Itoh, K. M.; Haller, E. E.; Harima, H.

In: journal of the physical society of japan, Vol. 74, No. 10, 10.2005, p. 2675-2678.

Research output: Contribution to journal › Article › peer-review

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abstract = "We report on a cooperative phenomenon of ferromagnetism and unconventional superconductivity (SC) in UGe2 through the measurements of 73Ge nuclear-quadrupole-resonance (NQR) under pressure (P). The NQR spectra evidenced phase separation into ferromagnetic and paramagnetic phases in the vicinity of Pc ∼ 1.5 GPa, pointing to a first-order transition. The measurements of nuclear-spin-lattice-relaxation-rate 1/T 1 revealed that SC emerges under the background of ferromagnetism, but not of the paramagnetic phase.",

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AU - Kitaoka, Y.

AU - Haga, Y.

AU - Yamamoto, E.

AU - Onuki, Y.

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