Phase separation in the vicinity of the surface of κ-(BEDT-TTF) 2Cu[N(CN)2]Br by fast cooling

N. Yoneyama; T. Sasaki; N. Kobayashi; Y. Ikemoto; H. Kimura

doi:10.1103/PhysRevB.72.214519

Phase separation in the vicinity of the surface of κ-(BEDT-TTF) 2Cu[N(CN)2]Br by fast cooling

N. Yoneyama, T. Sasaki, N. Kobayashi, Y. Ikemoto, H. Kimura

Institute for Materials Research (IMR) (institute affiliation only)

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

16 Citations (Scopus)

Abstract

Partial suppression of superconductivity by fast cooling has been observed in the organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2]Br by two means: a marked sample size effect on the magnetic susceptibility and direct imaging of insulating regions by scanning microregion infrared reflectance spectroscopy. Macroscopic insulating regions are proposed in the vicinity of the crystalline surface after fast cooling, with diameters of 50-100μm and depths of a few μm. The very large in-plane penetration depth reported to date (∼24-100μm) can be explained by the existence of the insulating regions.

Original language	English
Article number	214519
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	72
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.72.214519
Publication status	Published - 2005 Dec 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.72.214519

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abstract = "Partial suppression of superconductivity by fast cooling has been observed in the organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2]Br by two means: a marked sample size effect on the magnetic susceptibility and direct imaging of insulating regions by scanning microregion infrared reflectance spectroscopy. Macroscopic insulating regions are proposed in the vicinity of the crystalline surface after fast cooling, with diameters of 50-100μm and depths of a few μm. The very large in-plane penetration depth reported to date (∼24-100μm) can be explained by the existence of the insulating regions.",

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AU - Yoneyama, N.

AU - Sasaki, T.

AU - Kobayashi, N.

AU - Ikemoto, Y.

AU - Kimura, H.

PY - 2005/12/1

Y1 - 2005/12/1

N2 - Partial suppression of superconductivity by fast cooling has been observed in the organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2]Br by two means: a marked sample size effect on the magnetic susceptibility and direct imaging of insulating regions by scanning microregion infrared reflectance spectroscopy. Macroscopic insulating regions are proposed in the vicinity of the crystalline surface after fast cooling, with diameters of 50-100μm and depths of a few μm. The very large in-plane penetration depth reported to date (∼24-100μm) can be explained by the existence of the insulating regions.

AB - Partial suppression of superconductivity by fast cooling has been observed in the organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2]Br by two means: a marked sample size effect on the magnetic susceptibility and direct imaging of insulating regions by scanning microregion infrared reflectance spectroscopy. Macroscopic insulating regions are proposed in the vicinity of the crystalline surface after fast cooling, with diameters of 50-100μm and depths of a few μm. The very large in-plane penetration depth reported to date (∼24-100μm) can be explained by the existence of the insulating regions.

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Phase separation in the vicinity of the surface of κ-(BEDT-TTF) 2Cu[N(CN)2]Br by fast cooling

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