Molecular beam epitaxy growth of superconducting Sr2RuO4 films

M. Uchida; M. Ide; H. Watanabe; K. S. Takahashi; Y. Tokura; M. Kawasaki

doi:10.1063/1.5007342

APL Materials (Oct 2017)

Molecular beam epitaxy growth of superconducting Sr2RuO4 films

M. Uchida,
M. Ide,
H. Watanabe,
K. S. Takahashi,
Y. Tokura,
M. Kawasaki

Affiliations

M. Uchida: Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
M. Ide: Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
H. Watanabe: Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
K. S. Takahashi: RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
Y. Tokura: Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
M. Kawasaki: Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan

DOI: https://doi.org/10.1063/1.5007342
Journal volume & issue: Vol. 5, no. 10
pp. 106108 – 106108-5

Abstract

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We report the 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.

Published in APL Materials

ISSN: 2166-532X (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Biotechnology; Science: Physics
Website: http://aplmaterials.aip.org

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