We study the coexistence of superconductivity (SC) and density-wave state and reconcile various puzzling experimental data in organic superconductors (TMTSF)2PF6 and (TMTSF)2ClO4. The anisotropic resistance drop above Tc is qualitatively described by nascent isolated SC islands within a bulk analytical model. However, the observed anisotropic SC onset is explained only when the finite size and flat needle shape of samples is considered. Our results pave a way to estimate the volume fraction and the typical size of SC islands in far from the sample surface, and apply to many inhomogeneous superconductors, including high-Tc cuprate or Fe-based ones.
@article{arxiv.2007.14388,
title = {Anisotropic zero-resistance onset in organic superconductors},
author = {Vladislav D. Kochev and Kaushal K. Kesharpu and Pavel D. Grigoriev},
journal= {arXiv preprint arXiv:2007.14388},
year = {2024}
}