Superconductivity and Pronounced Electron‐Phonon Coupling in Rock‐Salt Al1−xO1−x and Ti1−xO1−x Article Swipe
Pjotrs Žguns
,
Nuh Gedik
,
Bilge Yildiz
,
Ju Li
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1002/aelm.202400141
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1002/aelm.202400141
The highest ambient‐pressure Tc among binary compounds is 40 K (MgB2). Higher Tc is achieved in high‐pressure hydrides or multielement cuprates. Alternatively, are explored superconducting properties of binary, metastable sub‐oxides, that may emerge under extremely low oxygen partial pressure. The emphasis is on the rock‐salt structure, which is known to promote superconductivity, and exploring AlO, ScO, TiO, and NbO. Dynamic lattice stability is achieved by introducing metal and oxygen vacancies in the fashion of Nb 1− x O 1− x ‐type structure (x = ¼). The electron‐phonon (e‐ph) coupling is remarkably large in Al 1− x O 1− x and Ti 1− x O 1− x (λ ≈ 2 at x = ¼), with Tc ≈ 35 K according to the Allen–Dynes equation. Significantly, the coupling strength is comparable to that in high‐pressure hydrides, yet, in contrast to hydrides and MgB2, the coupling is largely driven by low frequency phonons. Sc 1− x O 1− x and Nb 1− x O 1− x show significantly smaller λ and Tc. Further, hydrogen intercalation to boost λ and Tc is investigated. Only Ti 1− x (O 1− x Hx) and Nb 1− x (O 1− x Hx) are dynamically stable upon intercalation, where H, respectively, decreases and increases Tc. The effect of H doping on electronic structure and Tc is discussed. Altogether, the study suggests that metal sub‐oxides are promising compounds to achieve strong e‐ph coupling at ambient pressure.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1002/aelm.202400141
- https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/aelm.202400141
- OA Status
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- References
- 78
- Related Works
- 10
- OpenAlex ID
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Raw OpenAlex JSON
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https://openalex.org/W4398350587Canonical identifier for this work in OpenAlex
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https://doi.org/10.1002/aelm.202400141Digital Object Identifier
- Title
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Superconductivity and Pronounced Electron‐Phonon Coupling in Rock‐Salt Al1−xO1−x and Ti1−xO1−xWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2024Year of publication
- Publication date
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2024-05-23Full publication date if available
- Authors
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Pjotrs Žguns, Nuh Gedik, Bilge Yildiz, Ju LiList of authors in order
- Landing page
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https://doi.org/10.1002/aelm.202400141Publisher landing page
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/aelm.202400141Direct link to full text PDF
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YesWhether a free full text is available
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goldOpen access status per OpenAlex
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/aelm.202400141Direct OA link when available
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Superconductivity, Materials science, Condensed matter physics, Crystallography, Coupling (piping), X-ray crystallography, Physics, Metallurgy, Diffraction, Optics, ChemistryTop concepts (fields/topics) attached by OpenAlex
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0Total citation count in OpenAlex
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10Other works algorithmically related by OpenAlex
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| referenced_works | https://openalex.org/W2004372545, https://openalex.org/W38286700, https://openalex.org/W3022340857, https://openalex.org/W4254586152, https://openalex.org/W2089942530, https://openalex.org/W1485300768, https://openalex.org/W2056200009, https://openalex.org/W2014437371, https://openalex.org/W2078710135, https://openalex.org/W1996765737, https://openalex.org/W2070873799, https://openalex.org/W1963957450, https://openalex.org/W1542817303, https://openalex.org/W2681350253, https://openalex.org/W2753773550, https://openalex.org/W1668507869, https://openalex.org/W2902694017, https://openalex.org/W4251110817, https://openalex.org/W2202821822, https://openalex.org/W2028387641, https://openalex.org/W2036923204, https://openalex.org/W2912641193, https://openalex.org/W3004643840, https://openalex.org/W2317114037, https://openalex.org/W2596432409, https://openalex.org/W3135527288, https://openalex.org/W2576754086, https://openalex.org/W2803392261, https://openalex.org/W4389920719, https://openalex.org/W2056519795, https://openalex.org/W2974691724, https://openalex.org/W1992985800, https://openalex.org/W3183079551, https://openalex.org/W2038702617, https://openalex.org/W1992221955, https://openalex.org/W4231204115, https://openalex.org/W3167076346, https://openalex.org/W1564495388, https://openalex.org/W2078226033, https://openalex.org/W2087894124, https://openalex.org/W4200052617, https://openalex.org/W2038583777, https://openalex.org/W2129983833, https://openalex.org/W2094890981, https://openalex.org/W1971714101, https://openalex.org/W2072522903, https://openalex.org/W2114037591, https://openalex.org/W2170078525, https://openalex.org/W2403031254, https://openalex.org/W1988089558, https://openalex.org/W4290772317, https://openalex.org/W2138890585, https://openalex.org/W4394799079, https://openalex.org/W4229036795, https://openalex.org/W2063535704, https://openalex.org/W2045359557, https://openalex.org/W2079437360, https://openalex.org/W3134814034, https://openalex.org/W2071814198, https://openalex.org/W2030976617, https://openalex.org/W2230728100, https://openalex.org/W2120145199, https://openalex.org/W2757803490, https://openalex.org/W3016932526, https://openalex.org/W1981368803, https://openalex.org/W2054704030, https://openalex.org/W2767044503, https://openalex.org/W2084895780, https://openalex.org/W2339223279, https://openalex.org/W4388166534, https://openalex.org/W2150687058, https://openalex.org/W2083222334, https://openalex.org/W2007395042, https://openalex.org/W2087698390, https://openalex.org/W2079105963, https://openalex.org/W1970127494, https://openalex.org/W1979544533, https://openalex.org/W2028056984 |
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