Lower Critical Field of Layered Organic Superconductor with Asymmetrical Donor κ-(MDT-TTF)₂AuI₂

Abstract:

We report magnetization measurement in the superconducting state of a type-II organic layered superconductor with asymmetrical donor k-(MDT-TTF)₂AuI₂. The demagnetization factor of a plate-like shape of the single crystal has been taken into account for the measurement by applying an external field perpendicular to the conducting plane. The superconducting transition temperature T_C is determined to be 4.7 K through the detection of demagnetization signal. The lower critical field is 10.5±1.4 G. This result implies that the stable vortex state of k-(MDT-TTF)₂AuI₂ can be reached at the applied magnetic field above 105 Oe

• Periodical: Key Engineering Materials (Volume 855)
• Pages: 221-226
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.855.221
• Online since: July 2020
• Authors: Dita Puspita Sari*, Naito Rui, Kaito Miki, Isao Watanabe, Hiromi Taniguchi, Yasuyuki Ishii
• Keywords: Lower-Critical-Field, Organic Superconductor, Three-Dimensionality, μSR

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