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arXiv · 0801.0484

Anomalous In-Plane Anisotropy of the Onset of Superconductivity in (TMTSF)2ClO4

Shingo Yonezawa·S. Kusaba·Y. Maeno·P. Auban-Senzier·C. Pasquier·K. Bechgaard·D. Jérome
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Abstract

We report the magnetic field-amplitude and field-angle dependence of the superconducting onset temperature Tc_onset of the organic superconductor (TMTSF)2ClO4 in magnetic fields H accurately aligned to the conductive ab' plane. We revealed that the rapid increase of the onset fields at low temperatures occurs both for H // b' and H // a, irrespective of the carrier confinement. Moreover, in the vicinity of the Pauli limiting field, we report a shift of a principal axis of the in-plane field-angle dependence of Tc_onset away from the b' axis. This feature may be related to an occurrence of Fulde-Ferrell-Larkin-Ovchinnikov phases.

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Shingo Yonezawa, S. Kusaba, Y. Maeno, P. Auban-Senzier, C. Pasquier, K. Bechgaard, D. Jérome. 2008-01-03. Anomalous In-Plane Anisotropy of the Onset of Superconductivity in (TMTSF)2ClO4. https://doi.org/10.1103/physrevlett.100.117002

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