Growth of superconducting FeSe0.5Te0.5 thin films by pulsed-laser deposition

Y. Imai, T. Akiike, R. Tanaka, H. Takahashi, M. Hanawa, I. Tsukada, A. Maeda

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

FeSe0.5Te0.5 thin films with PbO-type structure are successfully grown on MgO(1 0 0) and LaSrAlO4(0 0 1) substrates from FeSe0.5Te0.5 or FeSe0.5Te0.75 polycrystalline targets by pulsed-laser deposition. The film deposited on the MgO substrate (film thickness ∼ 55 nm) shows superconductivity at 10.6 K (onset) and 9.2 K (zero resistivity). On the other hand, the film deposited on the LaSrAlO4 substrate (film thickness ∼ 250 nm) exhibits superconductivity at 5.4 K (onset) and 2.7 K (zero resistivity). This suggests the strong influence of substrate materials and/or the c-axis length to superconducting properties of FeSe0.5Te0.5 thin films.

Original languageEnglish
Pages (from-to)1038-1041
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume470
Issue number20
DOIs
Publication statusPublished - 2010 Nov 1
Externally publishedYes

Keywords

  • FeSe
  • Pulsed-laser deposition
  • Thin film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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