Superconductivity of Rock-Salt Structure LaO Epitaxial Thin Film

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24 Citations (Scopus)


We report a superconducting transition in a LaO epitaxial thin film with the superconducting transition onset temperature (Tc) at around 5 K. This Tc is higher than those of other lanthanum monochalcogenides and opposite to their chemical trend: Tc = 0.84, 1.02, and 1.48 K for LaX (X = S, Se, Te), respectively. The carrier control resulted in a dome-shaped Tc as a function of electron carrier density. In addition, the Tc was significantly sensitive to epitaxial strain in spite of the highly symmetric crystal structure. This rock-salt superconducting LaO could be a building block to design novel superlattice superconductors.

Original languageEnglish
Pages (from-to)6754-6757
Number of pages4
JournalJournal of the American Chemical Society
Issue number22
Publication statusPublished - 2018 Jun 6

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry


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