TY - JOUR
T1 - Enhancement of the superconducting transition temperature in FeSe epitaxial thin films by anisotropic compression
AU - Nabeshima, Fuyuki
AU - Imai, Yoshinori
AU - Hanawa, Masafumi
AU - Tsukada, Ichiro
AU - Maeda, Atsutaka
N1 - Funding Information:
We would like to thank S. Komiya and A. Ichinose for fruitful discussion. We also thank K. Fukawa at the Institute of Engineering Innovation, School of Engineering, University of Tokyo for supporting in the XRD measurements of the films. This research was supported by the Strategic International Collaboration Research Program (SICORP), Japan Science and Technology Agency.
PY - 2013/10/21
Y1 - 2013/10/21
N2 - 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.
AB - 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.
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U2 - 10.1063/1.4826945
DO - 10.1063/1.4826945
M3 - Article
AN - SCOPUS:84887083103
SN - 0003-6951
VL - 103
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 17
M1 - 172602
ER -