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Superconductivity in the iron selenide K <inf>x</inf>Fe <inf>2</inf>Se <inf>2</inf> (0≥x≥1.0)

Guo, J and Jin, S and Wang, G and Wang, S and Zhu, K and Zhou, T and He, M and Chen, X (2010) Superconductivity in the iron selenide K <inf>x</inf>Fe <inf>2</inf>Se <inf>2</inf> (0≥x≥1.0). Physical Review B - Condensed Matter and Materials Physics, 82. ISSN 1098-0121

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We report the superconductivity at above 30 K in a FeSe-layer compound K Fe Se (nominal composition) achieved by metal K intercalating in between FeSe layers. It is isostructural to BaFe As and possesses the highest T for FeSe-layer materials so far under ambient pressure. Hall effect indicates the carriers are dominated by electron in this superconductor. We confirm that the observed superconductivity at above 30 K is due to this FeSe-based 122 phase. Our results demonstrate that FeSe-layer materials are really remarkable superconductors via structure and carrier modulation. © 2010 The American Physical Society. 0.8 2 2 2 2 c

Item Type: Article
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 12 May 2018 20:06
Last Modified: 13 Apr 2021 10:28
DOI: 10.1103/PhysRevB.82.180520