# Fileset

[41535_2024_669_MOESM1_ESM.pdf](https://mdr.nims.go.jp/filesets/05c99150-ce39-4e88-8e10-aff0b088568e/download)

## Creator

[Taichi Terashima](https://orcid.org/0000-0001-9239-0621), Yuki Tokumoto, Kotaro Hamano, [Takako Konoike](https://orcid.org/0000-0002-6037-5782), [Naoki Kikugawa](https://orcid.org/0000-0003-3975-4478), Keiichi Edagawa

## Rights

[Creative Commons BY Attribution 4.0 International](https://creativecommons.org/licenses/by/4.0/)

## Other metadata

[Anomalous upper critical field in the quasicrystal superconductor Ta1.6Te](https://mdr.nims.go.jp/datasets/f04330b7-ac1c-4bcf-8ae1-b3d8617f78b4)

## Fulltext

ver6Supplementary Information1Anomalous upper critical field in the quasicrystal superconductor2Ta1.6Te3Taichi Terashima,1, ∗ Yuki Tokumoto,2, † Kotaro Hamano,24Takako Konoike,1 Naoki Kikugawa,3 and Keiichi Edagawa2, ‡51Research Center for Materials Nanoarchitectonics (MANA),6National Institute for Materials Science, Tsukuba 305-0003, Japan∗72Institute of Industrial Science, The University of Tokyo, Tokyo 153-8505, Japan83Center for Basic Research on Materials,9National Institute for Materials Science, Tsukuba 305-0003, Japan10(Dated: June 20, 2024)11∗ TERASHIMA.Taichi@nims.go.jp† tokumoto@iis.u-tokyo.ac.jp‡ edagawa@iis.u-tokyo.ac.jp1806040200R (mΩ)3.02.52.01.51.0T (K)impurity SCTc806040200R (mΩ)-0.8 -0.4 0.0 0.4 0.8B (T)T = 1.88 Kimpurity SCBc2(a)(b)Supplementary Figure 1. Superconducting impurity. (a) Resistance vs temperature curve showinga resistance drop near 3.2 K due to a superconducting impurity. (b) Resistance vs magnetic fieldcurve measured at 1.88 K showing a resistive transition due to the impurity near 0.47 T.SUPPLEMENTARY NOTE 112The present sample contains a small amount of a superconducting impurity whose transi-13tion temperature is about 3.2 K [Supplementary Figure 1(a)]. The resistance drop associated14with the superconducting transition is about 2% of the sample resistance. The upper critical15field of the superconducting impurity is about 0.47 T at 1.88 K [Supplementary Figure 1(b)].16We could not identify the chemical composition nor the compound of the superconducting17impurity.182SUPPLEMENTARY NOTE 219It might be instructive to estimate the lower limit of λso that can explain the observed20violation of the Pauli limit. Assuming that the experimental Bc2(0) equals Bp/√2,21√λso =11.33BpBpo=√21.33Bc2(0)Bpo. (1)Using the experimental value Bc2(0)/Bpo = 2.3, we obtain λso = 6.0, which corresponds to22τso = 2.8 ×10−13 s.233