# Superconducting Properties on Two-dimensional Quasicrystal (Ta$\_{0.95}$Cu$\_{0.05}$)$\_{1.6}$Te Studied with $^{125}$Te-NMR

Source: [Superconducting Properties on Two-dimensional Quasicrystal (Ta$\_{0.95}$Cu$\_{0.05}$)$\_{1.6}$Te Studied with $^{125}$Te-NMR](<https://www.sota2.com/research/paper/690d7d162828b7cc6937cf3d>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2026-06-24T05:00:31.418Z

Authors: H. Matsudaira, S. Kitagawa, K. Ishida, Y. Tokumoto, K. Tomiyama, K. Edagawa

Published: 2025-11-06T09:13:34.000Z

## Abstract

Physical properties in the normal and superconducting (SC) state are investigated with $^{125}$Te-nuclear magnetic resonance (NMR) measurements in a quasicrystal $\\mathrm{(Ta\_{0.95}Cu\_{0.05})\_{1.6}Te}$, which was a recently discovered superconductor with the SC transition temperature $T\_{\\mathrm{c}}$ = 0.94 K. The nuclear spin-lattice relaxation rate $1/T\_1$ shows a coherence peak just below $T\_{\\mathrm{c}}$, followed by an exponential decrease down to 0.1 K. The overall temperature dependence of $1/T\_1$ is in good agreement with an $s$-wave SC model with a 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, $^{125}$Te-NMR spectra show almost no broadening nor shift in the SC state, suggesting that an unusual SC state such as parity mixing might be realized in the Ta$\_{1.6}$Te superconductor.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2511.04208>)

[PDF](<https://arxiv.org/pdf/2511.04208.pdf>)