Anisotropy of Lower Critical Field in Organic Layered Superconductor λ-(BETS)₂GaCl₄

Abstract:

The lower critical field of type-II organic layered superconductor l-(BETS)₂GaCl₄ has been estimated by magnetic measurements. The demagnetization factor of a needle-like sample shape has been taken into account for the measurements by applying the external field, parallel and perpendicular to the conducting plane. The lower critical field for the field parallel to the conducting plane is 5.5(2) G, in contrast with the previous studies. This allows us to discuss the anisotropy of lower critical field H_c1 in a quasi-two-dimensional organic layered superconductor l-(BETS)₂GaCl₄.

• Periodical: Key Engineering Materials (Volume 860)
• Pages: 137-141
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.860.137
• Online since: August 2020
• Authors: Dita Puspita Sari*, Naito Rui, Koichi Hiraki, Takehito Nakano, Masayuki Hagiwara, Yasuo Nozue, Takumi Kusakawa, Akiko Hori, Isao Watanabe, Yasuyuki Ishii
• Keywords: Lower-Critical-Field, Organic Superconductor, Quasi-Two-Dimensionality, Superconducting Gap Symmetry

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