Matches in SemOpenAlex for { <https://semopenalex.org/work/W4225586930> ?p ?o ?g. }
- W4225586930 abstract "The titanium oxide superconductors exhibit many intriguing phenomena analogous to cuprates and iron pnictides/chalcogenides and thus provide an ideal platform for studying the pairing mechanism of high-temperature superconductors. Here we report the fabrication of superconducting Mg-Ti-O films on ${mathrm{MgAl}}_{2}{mathrm{O}}_{4}$ substrates with three principal orientations by ablating a ${mathrm{MgTi}}_{2}{mathrm{O}}_{4}$ target. Strikingly, a single-crystalline film with an unexpected structure has been found on the (011)-oriented substrate, with a zero resistance transition temperature (${T}_{mathrm{c}0}$) up to 5.0 K which is the highest among the three principal orientations. Compositional and structural characterizations confirm that the film has a highly reduced Mg/Ti ratio and an orthorhombic ${mathrm{Ti}}_{9}{mathrm{O}}_{10}$-like structure (denoted as Mg: ${mathrm{Ti}}_{9}{mathrm{O}}_{10}$). Such a structure is unstable in bulk but is favorable on the (011)-surface of ${mathrm{MgAl}}_{2}{mathrm{O}}_{4}$ due to the interfacial strain. Similar to other superconducting titanium oxides, the Mg: ${mathrm{Ti}}_{9}{mathrm{O}}_{10}$ film exhibits a relatively large quasi-isotropic upper critical field (${B}_{mathrm{c}2}ensuremath{sim}13.7$ T). The similarity points to a common origin for the superconductivity in the family, providing valuable insights for the mechanism of unconventional superconductivity in transition metal compounds." @default.
- W4225586930 created "2022-05-05" @default.
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- W4225586930 date "2022-06-17" @default.
- W4225586930 modified "2023-10-17" @default.
- W4225586930 title "Epitaxial stabilization of an orthorhombic Mg-Ti-O superconductor" @default.
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- W4225586930 doi "https://doi.org/10.1103/physrevb.105.214511" @default.
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