Superconductivity below 20 K in heavily electron-doped surface layer of FeSe bulk crystal

J. J. Seo; B. Y. Kim; B. S. Kim; J. K. Jeong; J. M. Ok; Jun Sung Kim; J. D. Denlinger; S. -K. Mo; C. Kim; Y. K. Kim

doi:10.1038/ncomms11116

Nature Communications (Apr 2016)

Superconductivity below 20 K in heavily electron-doped surface layer of FeSe bulk crystal

J. J. Seo,
B. Y. Kim,
B. S. Kim,
J. K. Jeong,
J. M. Ok,
Jun Sung Kim,
J. D. Denlinger,
S. -K. Mo,
C. Kim,
Y. K. Kim

Affiliations

J. J. Seo: Institute of Physics and Applied Physics, Yonsei University
B. Y. Kim: Department of Physics, Pohang University of Science and Technology
B. S. Kim: Center for Correlated Electron Systems, Institute for Basic Science
J. K. Jeong: Institute of Physics and Applied Physics, Yonsei University
J. M. Ok: Department of Physics, Pohang University of Science and Technology
Jun Sung Kim: Department of Physics, Pohang University of Science and Technology
J. D. Denlinger: Advanced Light Source, Lawrence Berkeley National Laboratory
S. -K. Mo: Advanced Light Source, Lawrence Berkeley National Laboratory
C. Kim: Center for Correlated Electron Systems, Institute for Basic Science
Y. K. Kim: Center for Correlated Electron Systems, Institute for Basic Science

DOI: https://doi.org/10.1038/ncomms11116
Journal volume & issue: Vol. 7, no. 1
pp. 1 – 5

Abstract

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Thin FeSe film on SrTiO3 substrate becomes a superconductor with a transition temperature over 100 K, yet the origin remains controversial. Here, Seo et al. show superconductivity below 20 K on the electron-doped surface of an FeSe crystal, suggesting a decisive role of interfacial effects in the enhancement of superconductivity.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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