Investigation of Superconducting Gap of High-Entropy Telluride AgInSnPbBiTe5
Abstract We performed transverse-field muon spin relaxation/rotation (TF- μ SR) on a high-entropy-type (HE-type) superconductor AgInSnPbBiTe 5 . The emergence of bulk superconducting states was confirmed from magnetic susceptibility, specific heat, and μ SR. The superconducting gap 2Δ(0) estimated from μ SR was clearly larger than that expected from conventional weak-coupling phonon-mediated model, suggesting the strong-coupling nature of superconductivity. In addition, a long penetration depth of 3.21(7) μm was obtained. The strong-coupling nature of superconductivity and the long penetration depth are similar to the trends observed in the other HE-type superconductors (HE alloys and transition-metal zirconides), which may be universal feature of HE-type superconductors.
Authors
- Kensei Terashima (ORCID: https://orcid.org/0000-0003-0375-3043)
- Jumpei Nakamura (ORCID: https://orcid.org/0000-0002-8381-5074)
- Yoshikazu Mizuguchi (ORCID: https://orcid.org/0000-0002-4771-7805)
- Md. Riad Kasem (ORCID: https://orcid.org/0009-0002-3898-2524)
- Yoshihiko Takano (ORCID: https://orcid.org/0000-0002-1541-6928)
- Aichi Yamashita (ORCID: https://orcid.org/0000-0003-0843-5028)
- Ryo Matsumoto (ORCID: https://orcid.org/0000-0002-1890-6658)
- S. Nishimura (ORCID: https://orcid.org/0000-0002-5581-4090)
- Asato Seshita (ORCID: https://orcid.org/0009-0007-8706-2165)
- Yuto Watanabe (ORCID: https://orcid.org/0009-0003-4035-8154)
- Hirotaka Okabe (ORCID: https://orcid.org/0000-0001-7170-0117)
- Masaki Fujita
Institutions
- High Energy Accelerator Research Organization (JP)
- Tohoku University (JP)
- National Institute for Materials Science (JP)
- Japan Proton Accelerator Research Complex (JP)
- Tokyo Metropolitan University (JP)
Publication Details
- Journal
- High Entropy Alloys & Materials
- Published
- 2024-12-24
- DOI
- https://doi.org/10.1007/s44210-024-00052-0
- Citations
- 1
- Primary Topic
- Chalcogenide Semiconductor Thin Films
- Type
- article
- Field-Weighted Citation Impact
- 0.21
Funders
- Tokyo Metropolitan University