Enhancement of the superconducting transition temperature in FeSe epitaxial thin films by anisotropic compression

Fuyuki Nabeshima, Yoshinori Imai, Masafumi Hanawa, Ichiro Tsukada, Atsutaka Maeda

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

In order to investigate the effects of in-plane strain on the superconductivity of FeSe, epitaxial thin films of FeSe were fabricated on CaF2 substrates. The films are compressed along the a-axis and their superconducting transition temperatures T c zero reach 11.4 K, which is approximately 1.5 times higher than that of bulk crystals. The Tc values are weakly dependent on the ratio of the lattice constants, c/a, compared to that of Fe(Se, Te). Our results indicate that even a binary system FeSe has room for improvement, and will pave the way for the application of Fe-based superconductors.

Original languageEnglish
Article number172602
JournalApplied Physics Letters
Volume103
Issue number17
DOIs
Publication statusPublished - 2013 Oct 21
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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