Nodal superconductivity and superconducting dome in the layered superconductor Ta4Pd3Te16
J. Pan, W. H. Jiao, X. C. Hong, Z. Zhang, L. P. He, P. L. Cai, J. Zhang, G. H. Cao, S. Y. Li
DOI 10.1103/PhysRevB.92.180505 · Physical Review B
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Abstract
We measured the low-temperature thermal conductivity of a layered superconductor with quasi-one-dimensional characteristics, the ternary telluride Ta4Pd3Te16 with a transition temperature Tc≈4.3 K. The significant residual linear term of thermal conductivity in zero magnetic field and its rapid field dependence provide evidence for nodes in the superconducting gap. By measuring resistivity under pressure, we reveal a superconducting dome in the temperature-pressure phase diagram. The existence of gap nodes and a superconducting dome suggest unconventional superconductivity in Ta4Pd3Te16, which may relate to a charge-density-wave instability in this low-dimensional compound.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ta4Pd3Te16 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.3 | Pressure unresolved | onset |
| Ta4Pd3Te16 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.3 | Pressure unresolved | zero_resistance |
| Ta4Pd3Te16 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.7 | 0.31 GPa | zero_resistance |
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