The superconducting gap structure of PrOs4 Sb12 and CeRu2 probed by C (H, φ{symbol})

J. Custers; A. Yamada; T. Tayama; T. Sakakibara; H. Sugawara; Y. Aoki; H. Sato; Y. Onuki; K. Machida

doi:10.1016/j.jmmm.2006.10.270

The superconducting gap structure of PrOs₄ Sb₁₂ and CeRu₂ probed by C (H, φ{symbol})

J. Custers^*, A. Yamada, T. Tayama, T. Sakakibara, H. Sugawara, Y. Aoki, H. Sato, Y. Onuki, K. Machida

^*この論文の責任著者

物理学科

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

6 被引用数 (Scopus)

抄録

We have performed measurements of the angle-resolved specific heat C (H, φ{symbol}) on PrOs₄ Sb₁₂ and the well-known s-wave superconductor CeRu₂ in order to gain information about their respective superconducting (SC) gap structure. PrOs₄ Sb₁₂ exhibits pronounced minima (maxima) in C (H, φ{symbol}) along the [1 0 0] ([1 1 1]) directions. CeRu₂ shows minima (maxima) along the [1 1 0] ([1 0 0]) directions. The field dependence of the oscillation amplitude of C (φ{symbol}), | A |, shows similar behavior for both suggesting finite minima in the SC gap, where C (φ{symbol}) is smallest. On the other hand, in comparison the temperature dependence of | A | shows aberrant behavior.

本文言語	英語
ページ（範囲）	700-702
ページ数	3
ジャーナル	Journal of Magnetism and Magnetic Materials
巻	310
号	2 SUPPL. PART 1
DOI	https://doi.org/10.1016/j.jmmm.2006.10.270
出版ステータス	出版済み - 2007/03

ASJC Scopus 主題領域

電子材料、光学材料、および磁性材料
凝縮系物理学

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10.1016/j.jmmm.2006.10.270

引用スタイル

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title = "The superconducting gap structure of PrOs4 Sb12 and CeRu2 probed by C (H, φ{symbol})",

abstract = "We have performed measurements of the angle-resolved specific heat C (H, φ{symbol}) on PrOs4 Sb12 and the well-known s-wave superconductor CeRu2 in order to gain information about their respective superconducting (SC) gap structure. PrOs4 Sb12 exhibits pronounced minima (maxima) in C (H, φ{symbol}) along the [1 0 0] ([1 1 1]) directions. CeRu2 shows minima (maxima) along the [1 1 0] ([1 0 0]) directions. The field dependence of the oscillation amplitude of C (φ{symbol}), | A |, shows similar behavior for both suggesting finite minima in the SC gap, where C (φ{symbol}) is smallest. On the other hand, in comparison the temperature dependence of | A | shows aberrant behavior.",

keywords = "Anisotropic superconductivity, CeRu, PrOs Sb, Specific heat, Unconventional superconductivity",

author = "J. Custers and A. Yamada and T. Tayama and T. Sakakibara and H. Sugawara and Y. Aoki and H. Sato and Y. Onuki and K. Machida",

note = "Funding Information: We are grateful to Y. Matsuda, K. Izawa, I. Vekhter, and P. Thalmeier for valuable discussions. The present work was supported by Grant-in-Aid for Scientific Research Priority Area “Skutterudite” (No.15072203 and No. 15072206) of MEXT, Japan. J.C. has been supported by the JSPS Post-doctoral Fellowship for Foreign Researchers. ",

year = "2007",

month = mar,

doi = "10.1016/j.jmmm.2006.10.270",

language = "英語",

volume = "310",

pages = "700--702",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

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TY - JOUR

T1 - The superconducting gap structure of PrOs4 Sb12 and CeRu2 probed by C (H, φ{symbol})

AU - Custers, J.

AU - Yamada, A.

AU - Tayama, T.

AU - Sakakibara, T.

AU - Sugawara, H.

AU - Aoki, Y.

AU - Sato, H.

AU - Onuki, Y.

AU - Machida, K.

N1 - Funding Information: We are grateful to Y. Matsuda, K. Izawa, I. Vekhter, and P. Thalmeier for valuable discussions. The present work was supported by Grant-in-Aid for Scientific Research Priority Area “Skutterudite” (No.15072203 and No. 15072206) of MEXT, Japan. J.C. has been supported by the JSPS Post-doctoral Fellowship for Foreign Researchers.

PY - 2007/3

Y1 - 2007/3

N2 - We have performed measurements of the angle-resolved specific heat C (H, φ{symbol}) on PrOs4 Sb12 and the well-known s-wave superconductor CeRu2 in order to gain information about their respective superconducting (SC) gap structure. PrOs4 Sb12 exhibits pronounced minima (maxima) in C (H, φ{symbol}) along the [1 0 0] ([1 1 1]) directions. CeRu2 shows minima (maxima) along the [1 1 0] ([1 0 0]) directions. The field dependence of the oscillation amplitude of C (φ{symbol}), | A |, shows similar behavior for both suggesting finite minima in the SC gap, where C (φ{symbol}) is smallest. On the other hand, in comparison the temperature dependence of | A | shows aberrant behavior.

AB - We have performed measurements of the angle-resolved specific heat C (H, φ{symbol}) on PrOs4 Sb12 and the well-known s-wave superconductor CeRu2 in order to gain information about their respective superconducting (SC) gap structure. PrOs4 Sb12 exhibits pronounced minima (maxima) in C (H, φ{symbol}) along the [1 0 0] ([1 1 1]) directions. CeRu2 shows minima (maxima) along the [1 1 0] ([1 0 0]) directions. The field dependence of the oscillation amplitude of C (φ{symbol}), | A |, shows similar behavior for both suggesting finite minima in the SC gap, where C (φ{symbol}) is smallest. On the other hand, in comparison the temperature dependence of | A | shows aberrant behavior.

KW - Anisotropic superconductivity

KW - CeRu

KW - PrOs Sb

KW - Specific heat

KW - Unconventional superconductivity

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U2 - 10.1016/j.jmmm.2006.10.270

DO - 10.1016/j.jmmm.2006.10.270

M3 - 学術論文

AN - SCOPUS:33847258799

SN - 0304-8853

VL - 310

SP - 700

EP - 702

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 2 SUPPL. PART 1

ER -

The superconducting gap structure of PrOs4 Sb12 and CeRu2 probed by C (H, φ{symbol})

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The superconducting gap structure of PrOs₄ Sb₁₂ and CeRu₂ probed by C (H, φ{symbol})