Molecular beam epitaxy growth of superconducting Sr2RuO4 films

Abstract

We report growth of superconducting Sr2RuO4 films by oxide molecular beam epitaxy (MBE). Careful tuning of the Ru flux with an electron beam evaporator enables us to optimize growth conditions including the Ru/Sr flux ratio and also to investigate stoichiometry effects on the structural and transport properties. The highest onset transition temperature of about 1.1 K is observed for films grown in a slightly Ru-rich flux condition in order to suppress Ru deficiency. The realization of superconducting Sr2RuO4 films via oxide MBE opens up a new route to study the unconventional superconductivity of this material.

arXiv comment10 pages, 3 figures

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• Sub-unit cell layer-by-layer growth of Fe3O4, MgO, and Sr2RuO4 thin films
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Cited by in corpus (14)

• Superconductivity in Uniquely Strained RuO${}_2$ Films
• Topological Properties and Functionalities in Oxide Thin Films and Interfaces
• Advances in Complex Oxide Quantum Materials Through New Approaches to Molecular Beam Epitaxy
• Transport signature of the magnetic Berezinskii-Kosterlitz-Thouless transition
• Anomalous Enhancement of Upper Critical Field in Sr2RuO4 Thin Films
• Electronic and vibrational signatures of ruthenium vacancies in Sr${}_2$RuO${}_4$ thin films
• Separated transport relaxation scales and interband scattering in SrRuO${}_3$, CaRuO${}_3$, and Sr${}_2$RuO${}_4$ thin films
• Inverse Proximity Effects at Spin-Triplet Superconductor-Ferromagnet Interface
• Identification of Spin-Triplet Superconductivity through a Helical-Chiral Phase Transition in Sr${}_2$RuO${}_4$ Thin-Films
• Quantum Oscillations and the Quasiparticle Properties of Thin Film Sr${}_2$RuO${}_4$
• Characterization of Sr2RuO4 Josephson junctions made of epitaxial films
• Ferromagnetic state with large magnetic moments realized in epitaxially strained Sr3Ru2O7 films
• Electronic and optical properties of La-doped Sr${}_3$Ir${}_2$O${}_7$ epitaxial thin-films
• Unconventional two-dimensional quantum oscillations in three-dimensional thick SrRuO${}_3$ films