Peak Effect in CeRu2: Role of Crystalline Defects

Masato Hedo; Yoshihiko Kobayashi; Yoshihiko Inada; Etsuji Yamamoto; Yoshinori Haga; Jun Ichi Suzuki; Naoto Metoki; Yoshichika Onuki; Hitoshi Sugawara; Hideyuki Sato; Kenichi Tenya; Takashi Tayama; Hiroshi Amitsuka; Toshiro Sakakibara

doi:10.1143/JPSJ.67.3561

Peak Effect in CeRu₂: Role of Crystalline Defects

Masato Hedo, Yoshihiko Kobayashi, Yoshihiko Inada, Etsuji Yamamoto, Yoshinori Haga, Jun Ichi Suzuki, Naoto Metoki, Yoshichika Onuki, Hitoshi Sugawara, Hideyuki Sato, Kenichi Tenya, Takashi Tayama, Hiroshi Amitsuka, Toshiro Sakakibara

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

11 Citations (Scopus)

Abstract

We measured the electrical resistivity in magnetic fields and the Hall voltage to understand the peak effect in a superconductor with the cubic structure CeRu₂. Two samples with residual resistivity ratios of ρ_RT/ρ₀ = 240 and 12 were prepared, and the experimental results in the superconducting mixed state were compared between them. The flux flow begins at a high field and the peak effect is observed in a very narrow window in the T vs. H phase diagram near the upper critical field H_c2 for the sample with ρ_RT/ρ₀ = 240, while it starts at a lower field and the window where the peak effect is observed becomes wider for the sample with ρRT/ρ₀ = 12. These characteristic features are mainly related to crystalline defects in the sample.

Original language	English
Pages (from-to)	3561-3569
Number of pages	9
Journal	journal of the physical society of japan
Volume	67
Issue number	10
DOIs	https://doi.org/10.1143/JPSJ.67.3561
Publication status	Published - Oct 1998
Externally published	Yes

Keywords

CeRu
Flux flow
GFFLO
Peak effect

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.67.3561

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Peak Effect in CeRu₂ : Role of Crystalline Defects. / Hedo, Masato; Kobayashi, Yoshihiko; Inada, Yoshihiko; Yamamoto, Etsuji; Haga, Yoshinori; Suzuki, Jun Ichi; Metoki, Naoto; Onuki, Yoshichika; Sugawara, Hitoshi; Sato, Hideyuki; Tenya, Kenichi; Tayama, Takashi; Amitsuka, Hiroshi; Sakakibara, Toshiro.

In: journal of the physical society of japan, Vol. 67, No. 10, 10.1998, p. 3561-3569.

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

Hedo, Masato ; Kobayashi, Yoshihiko ; Inada, Yoshihiko ; Yamamoto, Etsuji ; Haga, Yoshinori ; Suzuki, Jun Ichi ; Metoki, Naoto ; Onuki, Yoshichika ; Sugawara, Hitoshi ; Sato, Hideyuki ; Tenya, Kenichi ; Tayama, Takashi ; Amitsuka, Hiroshi ; Sakakibara, Toshiro. / Peak Effect in CeRu₂ : Role of Crystalline Defects. In: journal of the physical society of japan. 1998 ; Vol. 67, No. 10. pp. 3561-3569.

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abstract = "We measured the electrical resistivity in magnetic fields and the Hall voltage to understand the peak effect in a superconductor with the cubic structure CeRu2. Two samples with residual resistivity ratios of ρRT/ρ0 = 240 and 12 were prepared, and the experimental results in the superconducting mixed state were compared between them. The flux flow begins at a high field and the peak effect is observed in a very narrow window in the T vs. H phase diagram near the upper critical field Hc2 for the sample with ρRT/ρ0 = 240, while it starts at a lower field and the window where the peak effect is observed becomes wider for the sample with ρRT/ρ0 = 12. These characteristic features are mainly related to crystalline defects in the sample.",

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AU - Hedo, Masato

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AU - Inada, Yoshihiko

AU - Yamamoto, Etsuji

AU - Haga, Yoshinori

AU - Suzuki, Jun Ichi

AU - Metoki, Naoto

AU - Onuki, Yoshichika

AU - Sugawara, Hitoshi

AU - Sato, Hideyuki

AU - Tenya, Kenichi

AU - Tayama, Takashi

AU - Amitsuka, Hiroshi

AU - Sakakibara, Toshiro

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AB - We measured the electrical resistivity in magnetic fields and the Hall voltage to understand the peak effect in a superconductor with the cubic structure CeRu2. Two samples with residual resistivity ratios of ρRT/ρ0 = 240 and 12 were prepared, and the experimental results in the superconducting mixed state were compared between them. The flux flow begins at a high field and the peak effect is observed in a very narrow window in the T vs. H phase diagram near the upper critical field Hc2 for the sample with ρRT/ρ0 = 240, while it starts at a lower field and the window where the peak effect is observed becomes wider for the sample with ρRT/ρ0 = 12. These characteristic features are mainly related to crystalline defects in the sample.

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