Journal
PHYSICAL REVIEW B
Volume 103, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.103.014519
Keywords
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Funding
- Ministry of Science and Higher Education of the Russian Federation by Russian Foundation for Basic Research (RFBR) Grant [21-52-12027]
- Basis Foundation for the development of theoretical physics and mathematics
- MISiS Project [K2-2020-001]
- RFBR [19-32-90241, 19-31-27001, 19-02-01000, 21-52-12043]
- [0033-2019-0001]
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The study investigates the coexistence of superconductivity and density-wave state in organic superconductors, explaining observed experimental data by considering the finite size and flat needle shape of samples. This analysis provides a way to estimate the volume fraction and typical size of superconducting islands far from the sample surface, and can be applied to various inhomogeneous superconductors, including high-Tc cuprate or Fe-based ones.
We study the coexistence of superconductivity (SC) and density-wave state and reconcile various puzzling experimental data in organic superconductors (TMTSF)(2)PF6 and (TMTSF)(2)ClO4. The anisotropic resistance drop above T-c 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 far from the sample surface and apply to many inhomogeneous superconductors, including high-T-c cuprate or Fe-based ones.
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