Unusual NMR signatures of superconductivity in the two-dimensional quasicrystal (Ta0.95Cu0.05)1.6Te
H. Matsudaira, S. Kitagawa, K. Ishida, Y. Tokumoto, K. Tomiyama, K. Edagawa
DOI 10.1103/kyh6-vt3q · Physical Review Materials
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Physical properties in the normal and superconducting (SC) state are investigated with Te125-nuclear magnetic resonance (NMR) measurements in a quasicrystal (Ta0.95Cu0.05)1.6Te, which was a recently discovered superconductor with the SC transition temperature Tc=0.94 K. The nuclear spin-lattice relaxation rate 1/T1 shows a coherence peak just below Tc, followed by an exponential decrease down to 0.1 K. The overall temperature dependence of 1/T1 is in good agreement with an s-wave SC model with an SC gap slightly smaller than the BCS value. However, the coherence peak is unusually small, which may be attributable to a reduced Bogoliubov peak theoretically predicted for quasicrystals. Furthermore, Te125−NMR spectra show marginal shift and almost no linewidth broadening below Tc, revealing unusual superconducting responses in this quasicrystal.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (Ta0.95Cu0.05)1.6Te Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.94 | Pressure not reported | onset |
| (Ta0.95Cu0.05)1.6Te Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.94 | Pressure not reported | unknown |
| Ta1.6Te Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.98 | Pressure not reported | unknown |
Similar papers
Superconducting Properties on Two-dimensional Quasicrystal (TaCu)Te Studied with Te-NMR
similarity 0.93H. Matsudaira et al. · 2025 · arXiv:2511.04208
Source status unknown — claims are unverified
Nature of charge density waves and superconductivity in 1T−TaSe2−xTex
similarity 0.92Y. Liu (刘育) et al.
Source status unknown — claims are unverified
Scanning tunneling microscopy study of superconductivity, magnetic vortices, and possible charge-density wave in Ta4Pd3Te16
similarity 0.90Q. Fan et al.
Source status unknown — claims are unverified
Probing the superconducting ground state near the charge density wave phase transition in Cu0.06TiSe2
similarity 0.90A. D. Hillier et al.
Source status unknown — claims are unverified
Possible evidence of a two-gap structure for the CuxTiSe2 superconductor
similarity 0.90Moran Zaberchik et al.
Source status unknown — claims are unverified
Charge fluctuations and nodeless superconductivity in quasi-one-dimensional Ta4Pd3Te16 revealed by Te125-NMR and Ta181-NQR
similarity 0.90Z. Li et al.
Source status unknown — claims are unverified