Thermodynamic Anomaly Above the Superconducting Critical Temperature in the Quasi One-Dimensional Superconductor Ta$_4$Pd$_3$Te$_{16}$

T. Helm; F. Flicker; R. Kealhofer; P. Moll; I. M. Hayes; N. P. Breznay; Z. Li; S. G. Louie; Q. R. Zhang; L. Balicas; J. E. Moore; J. G. Analytis

doi:10.1103/physrevb.95.075121

arXiv · 1610.07226

Thermodynamic Anomaly Above the Superconducting Critical Temperature in the Quasi One-Dimensional Superconductor Ta$_4$Pd$_3$Te$_{16}$

T. Helm·F. Flicker·R. Kealhofer·P. Moll·I. M. Hayes·N. P. Breznay·Z. Li·S. G. Louie·Q. R. Zhang·L. Balicas·J. E. Moore·J. G. Analytis

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Abstract

We study the intrinsic transport anisotropy and fermiology of the quasi one-dimensional superconductor Ta$_4$Pd$_3$Te$_{16}$. Below $T^*=20$ K we detect a thermodynamic phase transition that predominantly affects the conductivity perpendicular to the quasi one-dimensional chains, consistent with a thermodynamic transition related to the presence of charge order that precedes superconductivity. Remarkably the Fermi surface pockets detected by de Haas-van Alphen (dHvA) oscillations are unaffected by this transition, suggesting that the ordered state does not break any translational symmetries but rather alters the scattering of the quasiparticles themselves.

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T. Helm, F. Flicker, R. Kealhofer, P. Moll, I. M. Hayes, N. P. Breznay, Z. Li, S. G. Louie, Q. R. Zhang, L. Balicas, J. E. Moore, J. G. Analytis. 2016-10-23. Thermodynamic Anomaly Above the Superconducting Critical Temperature in the Quasi One-Dimensional Superconductor Ta$_4$Pd$_3$Te$_{16}$. https://doi.org/10.1103/physrevb.95.075121

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