Pressure dependence of the first-order superconducting phase transition in CeCoIn5

Takashi Tayama; Yukie Namai; Toshiro Sakakibara; Masato Hedo; Yoshiya Uwatoko; Hiroaki Shishido; Rikio Settai; Yoshichika Onuki

doi:10.1143/JPSJ.74.1115

Pressure dependence of the first-order superconducting phase transition in CeCoIn₅

Takashi Tayama^*, Yukie Namai, Toshiro Sakakibara, Masato Hedo, Yoshiya Uwatoko, Hiroaki Shishido, Rikio Settai, Yoshichika Onuki

^*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

16 被引用数 (Scopus)

抄録

The pressure dependence of the first-order phase transition (FOPT) at the upper critical field H_c2 in CeCoIn₅ has been studied by magnetization measurements. The FOPT is found to persist at pressures at least up to 1.5 GPa in the c axis and up to 1.38 GPa in the a axis. With increasing pressure, the anisotropy of H_c2 becomes stronger, and the condensation energy decreases significantly. We also observed a notable peak effect near H_c2 under pressure. Our results suggest that the FOPT cannot be accounted for by Pauli limiting alone.

本文言語	英語
ページ（範囲）	1115-1118
ページ数	4
ジャーナル	Journal of the Physical Society of Japan
巻	74
号	4
DOI	https://doi.org/10.1143/JPSJ.74.1115
出版ステータス	出版済み - 2005/04

ASJC Scopus 主題領域

物理学および天文学一般

文献へのアクセス

10.1143/JPSJ.74.1115

引用スタイル

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title = "Pressure dependence of the first-order superconducting phase transition in CeCoIn5",

abstract = "The pressure dependence of the first-order phase transition (FOPT) at the upper critical field Hc2 in CeCoIn5 has been studied by magnetization measurements. The FOPT is found to persist at pressures at least up to 1.5 GPa in the c axis and up to 1.38 GPa in the a axis. With increasing pressure, the anisotropy of Hc2 becomes stronger, and the condensation energy decreases significantly. We also observed a notable peak effect near Hc2 under pressure. Our results suggest that the FOPT cannot be accounted for by Pauli limiting alone.",

keywords = "Cecoin, First-order superconducting phase transition, Heavy fermion superconductor, Hydrostatic pressure, Magnetization, Pauli limiting, Phase diagram",

author = "Takashi Tayama and Yukie Namai and Toshiro Sakakibara and Masato Hedo and Yoshiya Uwatoko and Hiroaki Shishido and Rikio Settai and Yoshichika Onuki",

year = "2005",

month = apr,

doi = "10.1143/JPSJ.74.1115",

language = "英語",

volume = "74",

pages = "1115--1118",

journal = "Journal of the Physical Society of Japan",

issn = "0031-9015",

publisher = "The Physical Society of Japan",

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TY - JOUR

T1 - Pressure dependence of the first-order superconducting phase transition in CeCoIn5

AU - Tayama, Takashi

AU - Namai, Yukie

AU - Sakakibara, Toshiro

AU - Hedo, Masato

AU - Uwatoko, Yoshiya

AU - Shishido, Hiroaki

AU - Settai, Rikio

AU - Onuki, Yoshichika

PY - 2005/4

Y1 - 2005/4

N2 - The pressure dependence of the first-order phase transition (FOPT) at the upper critical field Hc2 in CeCoIn5 has been studied by magnetization measurements. The FOPT is found to persist at pressures at least up to 1.5 GPa in the c axis and up to 1.38 GPa in the a axis. With increasing pressure, the anisotropy of Hc2 becomes stronger, and the condensation energy decreases significantly. We also observed a notable peak effect near Hc2 under pressure. Our results suggest that the FOPT cannot be accounted for by Pauli limiting alone.

AB - The pressure dependence of the first-order phase transition (FOPT) at the upper critical field Hc2 in CeCoIn5 has been studied by magnetization measurements. The FOPT is found to persist at pressures at least up to 1.5 GPa in the c axis and up to 1.38 GPa in the a axis. With increasing pressure, the anisotropy of Hc2 becomes stronger, and the condensation energy decreases significantly. We also observed a notable peak effect near Hc2 under pressure. Our results suggest that the FOPT cannot be accounted for by Pauli limiting alone.

KW - Cecoin

KW - First-order superconducting phase transition

KW - Heavy fermion superconductor

KW - Hydrostatic pressure

KW - Magnetization

KW - Pauli limiting

KW - Phase diagram

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U2 - 10.1143/JPSJ.74.1115

DO - 10.1143/JPSJ.74.1115

M3 - 学術論文

AN - SCOPUS:24644511653

SN - 0031-9015

VL - 74

SP - 1115

EP - 1118

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - 4

ER -

Pressure dependence of the first-order superconducting phase transition in CeCoIn5

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引用スタイル

Pressure dependence of the first-order superconducting phase transition in CeCoIn₅