Low-temperature fabrication of superconducting FeSe thin films by pulsed laser deposition

Ta Kun Chen, Jiu Yong Luo, Chung Ting Ke, Hsian Hong Chang, Tzu Wen Huang, Kuo Wei Yeh, Chung Chieh Chang, Po Chun Hsu, Chun Te Wu, Ming Jye Wang, Mau Kuen Wu

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Superconducting FeSe thin films were prepared at a substrate temperature of 320 °C by pulsed laser deposition. X-ray diffraction and transmission electron microscopic analyses showed that highly c-axis-orientated and high-quality films were obtained on various substrate materials, including single-crystal MgO, LaAlO3, SrTiO3 and (100)-Si, and amorphous-SiOx, at such low temperature. From transport measurements all the films showed low-temperature structural phase transition at ∼ 60-90 K and superconducting transition at onset temperature varies from ∼ 7 K to < 2 K, depending on the substrate used. The transport property of FeSe film on Si was found most different from all the others, in spite of their similarity in structural analysis. Chemical analysis demonstrated that Fe and Se homogeneously distributed in the film and the stoichiometry of FeSe and the bonding states of Fe and Se are as well uniform along the film growth direction.

Original languageEnglish
Pages (from-to)1540-1545
Number of pages6
JournalThin Solid Films
Volume519
Issue number5
DOIs
Publication statusPublished - Dec 30 2010
Externally publishedYes

Keywords

  • Epitaxial growth
  • FeSe
  • Interfacial stress
  • Pulsed laser deposition
  • Superconducting film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

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  • Cite this

    Chen, T. K., Luo, J. Y., Ke, C. T., Chang, H. H., Huang, T. W., Yeh, K. W., Chang, C. C., Hsu, P. C., Wu, C. T., Wang, M. J., & Wu, M. K. (2010). Low-temperature fabrication of superconducting FeSe thin films by pulsed laser deposition. Thin Solid Films, 519(5), 1540-1545. https://doi.org/10.1016/j.tsf.2010.06.002