Mobility analysis of FeTe thin films

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

doi:10.1143/JPSJ.80.023712

Mobility analysis of FeTe thin films

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

Research output: Contribution to journal › Article › peer-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 language	English
Article number	023712
Journal	journal of the physical society of japan
Volume	80
Issue number	2
DOIs	https://doi.org/10.1143/JPSJ.80.023712
Publication status	Published - 2011 Feb
Externally published	Yes

Keywords

FeTe
Hall effect
Iron chalcogenide
Thin films
Two-band model

ASJC Scopus subject areas

Physics and Astronomy(all)

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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.",

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AU - Tsukada, Ichiro

AU - Hanawa, Masafumi

AU - Komiya, Seiki

AU - Ichinose, Ataru

AU - Akiike, Takanori

AU - Imai, Yoshinori

AU - Maeda, Atsutaka

PY - 2011/2

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N2 - 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.

AB - 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.

KW - FeTe

KW - Hall effect

KW - Iron chalcogenide

KW - Thin films

KW - Two-band model

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Mobility analysis of FeTe thin films

Abstract

Keywords

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