NMR studies of β-pyrochlore superconductors with osmium, under hydrostatic pressure

K. Arai; M. Takigawa; S. Yonezawa; Y. Muraoka; Z. Hiroi

doi:10.1016/j.physb.2006.01.322

NMR studies of β-pyrochlore superconductors with osmium, under hydrostatic pressure

K. Arai, M. Takigawa, S. Yonezawa, Y. Muraoka, Z. Hiroi

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

Abstract

We report pressure effects on the multiscripts(Rb, mml:none(), mml:none(), prescripts(), mml:none(), 87) nuclear relaxation rate 1 / T₁ in the osmate superconductor RbOs₂ O₆. The superconducting transition temperature T_c increases from 6.3 K at ambient pressure to 8.2 K at 2 GPa. Although 1 / ( T₁ T ) is slightly enhanced by pressure at low temperatures, the temperature dependence of 1 / ( T₁ T ) hardly changes below T_c. Even though T_c of RbOs₂ O₆ at 2 GPa reaches a value close to that of KOs₂ O₆ at ambient pressure (9.6 K), they show completely different nuclear relaxation behaviors.

Original language	English
Pages (from-to)	878-879
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	378-380
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2006.01.322
Publication status	Published - May 1 2006
Externally published	Yes

Keywords

Hydrostatic pressure
Pyrochlore superconductor

ASJC Scopus subject areas

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

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10.1016/j.physb.2006.01.322

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title = "NMR studies of β-pyrochlore superconductors with osmium, under hydrostatic pressure",

abstract = "We report pressure effects on the multiscripts(Rb, mml:none(), mml:none(), prescripts(), mml:none(), 87) nuclear relaxation rate 1 / T1 in the osmate superconductor RbOs2 O6. The superconducting transition temperature Tc increases from 6.3 K at ambient pressure to 8.2 K at 2 GPa. Although 1 / ( T1 T ) is slightly enhanced by pressure at low temperatures, the temperature dependence of 1 / ( T1 T ) hardly changes below Tc. Even though Tc of RbOs2 O6 at 2 GPa reaches a value close to that of KOs2 O6 at ambient pressure (9.6 K), they show completely different nuclear relaxation behaviors.",

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T1 - NMR studies of β-pyrochlore superconductors with osmium, under hydrostatic pressure

AU - Arai, K.

AU - Takigawa, M.

AU - Yonezawa, S.

AU - Muraoka, Y.

AU - Hiroi, Z.

PY - 2006/5/1

Y1 - 2006/5/1

N2 - We report pressure effects on the multiscripts(Rb, mml:none(), mml:none(), prescripts(), mml:none(), 87) nuclear relaxation rate 1 / T1 in the osmate superconductor RbOs2 O6. The superconducting transition temperature Tc increases from 6.3 K at ambient pressure to 8.2 K at 2 GPa. Although 1 / ( T1 T ) is slightly enhanced by pressure at low temperatures, the temperature dependence of 1 / ( T1 T ) hardly changes below Tc. Even though Tc of RbOs2 O6 at 2 GPa reaches a value close to that of KOs2 O6 at ambient pressure (9.6 K), they show completely different nuclear relaxation behaviors.

AB - We report pressure effects on the multiscripts(Rb, mml:none(), mml:none(), prescripts(), mml:none(), 87) nuclear relaxation rate 1 / T1 in the osmate superconductor RbOs2 O6. The superconducting transition temperature Tc increases from 6.3 K at ambient pressure to 8.2 K at 2 GPa. Although 1 / ( T1 T ) is slightly enhanced by pressure at low temperatures, the temperature dependence of 1 / ( T1 T ) hardly changes below Tc. Even though Tc of RbOs2 O6 at 2 GPa reaches a value close to that of KOs2 O6 at ambient pressure (9.6 K), they show completely different nuclear relaxation behaviors.

KW - Hydrostatic pressure

KW - Pyrochlore superconductor

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NMR studies of β-pyrochlore superconductors with osmium, under hydrostatic pressure

Abstract

Keywords

ASJC Scopus subject areas

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