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

被引：19

作者：

Harada, A ^{[1
]}

Kawasaki, S

Kotegawa, H

Kitaoka, Y

Haga, Y

Yamamoto, E

Onuki, Y

Itoh, KM

Haller, EE

Harima, H

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Dept Mat Engn Sci, Toyonaka, Osaka 5608531, Japan

[2] Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[3] Osaka Univ, Grad Sch Sci, Dept Phys, Toyonaka, Osaka 5600043, Japan

[4] Keio Univ, Dept Appl Phys & Physicoinformat, Yokohama, Kanagawa 2238522, Japan

[5] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA

[6] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[7] Kobe Univ, Fac Sci, Dept Phys, Kobe, Hyogo 6578501, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2005年 / 74卷 / 10期

关键词：

itinerant ferromagnetism; unconventional superconductivity; UGe2; NOR under pressure; first-order phase transition;

D O I：

10.1143/JPSJ.74.2675

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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

引用

页码：2675 / 2678

页数：4

共 26 条

[21] Cu-NQR study of magnetism and superconductivity in Ce1+xCu2+ySi2 under pressure
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Kitaoka, Y
Asayama, K
Geibel, C
Steglich, F
PHYSICA B, 2000, 281 : 14 - 15
[22] Cu-NQR study of magnetism and superconductivity in Ce1+xCu2+ySi2 under pressure
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Y. Kawasaki
T. Mito
C. Thessieu
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Y. Kitaoka
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F. Steglich
Hyperfine Interactions, 2000, 128 : 193 - 204
[23] Cu-NQR study of magnetism and superconductivity in Ce1+xCu2+ySi2 under pressure
Ishida, K
Kawasaki, Y
Mito, T
Thessieu, C
Zheng, GQ
Kitaoka, Y
Geibel, C
Steglich, F
HYPERFINE INTERACTIONS, 2000, 128 (1-3): : 193 - 204
[24] Cu-NQR study of CeCu2(Si0.98Ge0.02)2 under hydrostatic pressure
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Ishida, K
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PHYSICA B-CONDENSED MATTER, 2002, 312 : 428 - 430
[25] Evolution of an Unconventional Superconducting State inside the Antiferromagnetic Phase of CeNiGe3 under Pressure: A 73Ge-Nuclear-Quadrupole-Resonance Study
Harada, Atsushi
Mukuda, Hidekazu
Kitaoka, Yoshio
Thamizhavel, Arumugam
Okuda, Yusuke
Settai, Rikio
Onuki, Yoshichika
Itoh, Kouhei M.
Haller, Eugene E.
Harima, Hisatomo
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2008, 77 (10)
[26] 123Sb-NQR study of unconventional superconductivity in the filled skutterudite heavy-fermion compound PrOs4Sb12 under high pressure up to 3.82 GPa
Kawasaki, S.
Katayama, K.
Sugawara, H.
Kikuch, D.
Sato, H.
Zheng, Guo-qing
PHYSICAL REVIEW B, 2008, 78 (06)

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