Robustness of superconductivity to external pressure in high-entropy-alloy-type metal telluride AgInSnPbBiTe5
Open accessAbstract
High-entropy-alloy (HEA) superconductors are a new class of disordered superconductors. However, commonality of superconducting characteristics of HEA materials is unclear. Here, we have investigated the crystal and electronic structure, and the robustness of superconducting states in a HEA-type metal telluride (M Te; M = Ag, In, Sn, Pb, Bi) under high pressure, and the results were compared with the pressure effects for a middle-entropy system (AgPbBiTe 3) and a reference system of PbTe. When the crystal structure is CsCl-type, all phases show superconductivity under high pressure but exhibit different pressure dependences of the transition temperature (Tc). For PbTe, its Tc decreases with pressure. In contrast, the Tc of HEA-type AgInSnPbBiTe 5 is almost independent of pressure, for pressures ranging from 13.0 to 35.1 GPa. Those results suggest that the robustness of superconductivity to external pressure is linked to the configurational entropy of mixing at the M site in M Te. Since the trend is quite similar to previous work on a HEA (Ti–Zr–Hf–Nb–Ta), where the robustness of superconductivity was observed up to ~ 200 GPa, we propose that the robustness of superconductivity under high pressure would be a universal feature in HEA-type superconductors.
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The robustness of the superconducting state was also observed in AgInSnPbBiTe5 high-entropy telluride under high pressure.
“The robustness of the superconducting state was also observed in AgInSnPbBiTe5 high-entropy telluride under high pressure 84 .”
From Recent advances in high-entropy superconductors (2024) · cites this paper as [84]
The Tc of AgInSnPbBiTe5 with a CsCl-type structure is almost independent of pressure for pressures ranging from 13 to 35 GPa.
“The T c of AgInSnPbBiTe5 with a CsCl-type structure is almost independent of pressure for pressures ranging from 13 to 35 GPa.”
From Recent advances in high-entropy superconductors (2024) · cites this paper as [84]
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- Authors
- Kasem, M. R., Nakahira, Y., Yamaoka, H., Matsumoto, R., Yamashita, A., Ishii, H., Hiraoka, N., Takano, Y., Goto, Y., & Mizuguchi, Y.
- Affiliations
- Tokyo Metropolitan University (JP)
- SPring-8 (JP)
- National Institute for Materials Science (JP)
- National Synchrotron Radiation Research Center (TW)
- Corresponding author
- Mizuguchi, Yoshikazu
- ORCID
- Venue
- Scientific Reports
- Published
- 2022-05-12
- Volume
- 12
- Issue
- 1
- Pages
- 7789-7789
- ISSN
- 2045-2322 (ISSN-L)
- PMC
- PMC9098454
- OpenAlex
- W4226040526
- Cited by
- 35
- References
- 43
- Citations by year
- 2026: 2 · 2025: 12 · 2024: 13 · 2023: 3 · 2022: 5
- FWCI
- 4.79
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Scientific Reports (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- arXiv (Cornell University) (cc-by)
- Funders
- Japan Society for the Promotion of Science (18KK0076, 21K18834, 21H00151)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Geophysics › High-pressure geophysics and materials
- Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Physics of Superconductivity and Magnetism
- Physical Sciences › Engineering › Mechanical Engineering › High Entropy Alloys Studies
- Keywords
- high-entropy alloys, superconductivity, metal tellurides, high pressure, pressure dependence of transition temperature, configurational entropy, disordered superconductors, PbTe, crystal structure, electronic structure, B2 phase
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