Mobility analysis of FeTe thin films

Ichiro Tsukada, Masafumi Hanawa, Seiki Komiya, Ataru Ichinose, Takanori Akiike, Yoshinori Imai, Atsutaka Maeda

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The Hall effect is investigated in detail for nonsuperconducting and superconducting FeTe thin films. The Hall coefficient commonly exhibits a sign reversal from positive in a high-temperature paramagnetic state to negative in a low-temperature antiferromagnetic state. Phenomenological analysis by a simple two-band Drude model indicates that hole mobility is significantly suppressed in the antiferromagnetic state. When suppression of the hole mobility is insufficient, superconductivity shows up in FeTe. This result strongly suggests that the itinerancy in both hole and electron channels is the essential factor for the occurrence of superconductivity in iron chalcogenide superconductors.

Original languageEnglish
Article number023712
Journaljournal of the physical society of japan
Volume80
Issue number2
DOIs
Publication statusPublished - 2011 Feb
Externally publishedYes

Keywords

  • FeTe
  • Hall effect
  • Iron chalcogenide
  • Thin films
  • Two-band model

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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