Growth and transport properties of FeSe/FeTe superlattice thin films

Fuyuki Nabeshima, Yoshinori Imai, Ataru Ichinose, Ichiro Tsukada, Atsutaka Maeda

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Superlattice thin films composed of iron chalcogenides, FeSe and FeTe, were grown via pulsed laser deposition. The X-ray diffraction patterns show clear satellite peaks demonstrating periodic stacking structures of FeSe and FeTe. The FeTe layers have the a-axis lengths identical to those of the FeSe layers, indicating that the FeTe layers are coherently strained to the underlying FeSe. The superlattice films show superconducting transition temperatures higher than FeSe, and more importantly the superconductivity emerged in several-unit-cell-thick layers. Our results demonstrate that the strained superlattice technique is a useful tool to control superconducting properties of Fe(Se,Te) thin films.

Original languageEnglish
Article number020308
JournalJapanese Journal of Applied Physics
Issue number2
Publication statusPublished - 2017 Feb


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