Critical Field Anisotropy in “2K-Superconducting State” of Organic Superconductor β-(BEDT-TTF)
                        2
                        I
                        3

Takahiko Sasaki; Naoki Toyota; Masahiko Hasumi; Toshihito Osada; Seiichi Kagoshima; Hiroyuki Anzai; Madoka Tokumoto; Nobumori Kinoshita

doi:10.1143/JPSJ.58.3477

Critical Field Anisotropy in “2K-Superconducting State” of Organic Superconductor β-(BEDT-TTF) ₂ I ₃

Takahiko Sasaki, Naoki Toyota, Masahiko Hasumi, Toshihito Osada, Seiichi Kagoshima, Hiroyuki Anzai, Madoka Tokumoto, Nobumori Kinoshita

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

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

2 Citations (Scopus)

Abstract

The anisotropy of the upper critical field H _c2 has been measured at ambient pressure on a layered organic superconductor β-(BEDT-TTF) ₂ I ₃ both in the states before and after annealing at 109 K for 120 hours. By annealing, the critical temperature T _c increases from 1.4 to 2.08 K, while the H _c2±plane increases and the anisotropy, H _c2//plane /H _c2±Plane , decreases. The angular dependences of H _c2 for both states are explained in terms of the effective mass model. It is clarified that the enhanced T _c which is ascribed to the annealing-induced configurational orderings of ethylene groups is closely related to the enhanced effective mass in the basal plane.

Original language	English
Pages (from-to)	3477-3480
Number of pages	4
Journal	journal of the physical society of japan
Volume	58
Issue number	10
DOIs	https://doi.org/10.1143/JPSJ.58.3477
Publication status	Published - 1989 Jan 1

Keywords

Critical field anisotropy
β(BEDT-TTF) I

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.58.3477

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Sasaki, T., Toyota, N., Hasumi, M., Osada, T., Kagoshima, S., Anzai, H., Tokumoto, M., & Kinoshita, N. (1989). Critical Field Anisotropy in “2K-Superconducting State” of Organic Superconductor β-(BEDT-TTF) ₂ I ₃ journal of the physical society of japan, 58(10), 3477-3480. https://doi.org/10.1143/JPSJ.58.3477

Critical Field Anisotropy in “2K-Superconducting State” of Organic Superconductor β-(BEDT-TTF) ₂ I ₃ . / Sasaki, Takahiko; Toyota, Naoki; Hasumi, Masahiko; Osada, Toshihito; Kagoshima, Seiichi; Anzai, Hiroyuki; Tokumoto, Madoka; Kinoshita, Nobumori.

In: journal of the physical society of japan, Vol. 58, No. 10, 01.01.1989, p. 3477-3480.

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

Sasaki, T, Toyota, N, Hasumi, M, Osada, T, Kagoshima, S, Anzai, H, Tokumoto, M & Kinoshita, N 1989, ' Critical Field Anisotropy in “2K-Superconducting State” of Organic Superconductor β-(BEDT-TTF) ₂ I ₃ ', journal of the physical society of japan, vol. 58, no. 10, pp. 3477-3480. https://doi.org/10.1143/JPSJ.58.3477

Sasaki T, Toyota N, Hasumi M, Osada T, Kagoshima S, Anzai H et al. Critical Field Anisotropy in “2K-Superconducting State” of Organic Superconductor β-(BEDT-TTF) ₂ I ₃ journal of the physical society of japan. 1989 Jan 1;58(10):3477-3480. https://doi.org/10.1143/JPSJ.58.3477

Sasaki, Takahiko ; Toyota, Naoki ; Hasumi, Masahiko ; Osada, Toshihito ; Kagoshima, Seiichi ; Anzai, Hiroyuki ; Tokumoto, Madoka ; Kinoshita, Nobumori. / Critical Field Anisotropy in “2K-Superconducting State” of Organic Superconductor β-(BEDT-TTF) ₂ I ₃ In: journal of the physical society of japan. 1989 ; Vol. 58, No. 10. pp. 3477-3480.

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abstract = " The anisotropy of the upper critical field H c2 has been measured at ambient pressure on a layered organic superconductor β-(BEDT-TTF) 2 I 3 both in the states before and after annealing at 109 K for 120 hours. By annealing, the critical temperature T c increases from 1.4 to 2.08 K, while the H c2±plane increases and the anisotropy, H c2//plane /H c2±Plane , decreases. The angular dependences of H c2 for both states are explained in terms of the effective mass model. It is clarified that the enhanced T c which is ascribed to the annealing-induced configurational orderings of ethylene groups is closely related to the enhanced effective mass in the basal plane.",

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AU - Kagoshima, Seiichi

AU - Anzai, Hiroyuki

AU - Tokumoto, Madoka

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AB - The anisotropy of the upper critical field H c2 has been measured at ambient pressure on a layered organic superconductor β-(BEDT-TTF) 2 I 3 both in the states before and after annealing at 109 K for 120 hours. By annealing, the critical temperature T c increases from 1.4 to 2.08 K, while the H c2±plane increases and the anisotropy, H c2//plane /H c2±Plane , decreases. The angular dependences of H c2 for both states are explained in terms of the effective mass model. It is clarified that the enhanced T c which is ascribed to the annealing-induced configurational orderings of ethylene groups is closely related to the enhanced effective mass in the basal plane.

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