High-pressure studies on superconducting iron-based LaFeAsO 1-xFx, LaFePO and SrFe2As2

Hiroki Takahashi; Hironari Okada; Kazumi Igawa; Kazunobu Arii; Yoichi Kamihara; Satoru Matsuishi; Masahiro Hirano; Hideo Hosono; Kazuyuki Matsubayashi; Yoshiya Uwatoko

doi:10.1143/JPSJS.77SC.78

High-pressure studies on superconducting iron-based LaFeAsO _1-xF_x, LaFePO and SrFe₂As₂

Hiroki Takahashi, Hironari Okada, Kazumi Igawa, Kazunobu Arii, Yoichi Kamihara, Satoru Matsuishi, Masahiro Hirano, Hideo Hosono, Kazuyuki Matsubayashi, Yoshiya Uwatoko

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

Electrical resistivity and magnetic susceptibility measurements under high pressure were performed on iron-based superconductor LaFePO and LaFeAsO _1-xF_x system. A steep increase in superconducting transition temperature (T_c) was observed for LaFePO and "optimum-doped" and "over-doped" LaFeAsO_1-xF _x. Pressure-induced superconductivity was confirmed in undoped LaFeAsO and SrFe₂As₂ by electrical resistivity measurements under high pressure. X-ray diffraction measurements were also performed under high pressure up to 10 GPa for LaFePO and LaFeAsO _1-xF_x system, where the anisotropic decrease of the lattice constants was observed with applying pressure.

Original language	English
Pages (from-to)	78-83
Number of pages	6
Journal	Journal of the Physical Society of Japan
Volume	77
Issue number	SUPPL. C
DOIs	https://doi.org/10.1143/JPSJS.77SC.78
Publication status	Published - 2008
Externally published	Yes

Keywords

High pressure
Iron-based superconductor
LaFeAsO F
LaFePO
Oxypnictide
SrFeAs
Superconductivity

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJS.77SC.78

Cite this

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title = "High-pressure studies on superconducting iron-based LaFeAsO 1-xFx, LaFePO and SrFe2As2",

abstract = "Electrical resistivity and magnetic susceptibility measurements under high pressure were performed on iron-based superconductor LaFePO and LaFeAsO 1-xFx system. A steep increase in superconducting transition temperature (Tc) was observed for LaFePO and {"}optimum-doped{"} and {"}over-doped{"} LaFeAsO1-xF x. Pressure-induced superconductivity was confirmed in undoped LaFeAsO and SrFe2As2 by electrical resistivity measurements under high pressure. X-ray diffraction measurements were also performed under high pressure up to 10 GPa for LaFePO and LaFeAsO 1-xFx system, where the anisotropic decrease of the lattice constants was observed with applying pressure.",

keywords = "High pressure, Iron-based superconductor, LaFeAsO F, LaFePO, Oxypnictide, SrFeAs, Superconductivity",

author = "Hiroki Takahashi and Hironari Okada and Kazumi Igawa and Kazunobu Arii and Yoichi Kamihara and Satoru Matsuishi and Masahiro Hirano and Hideo Hosono and Kazuyuki Matsubayashi and Yoshiya Uwatoko",

year = "2008",

doi = "10.1143/JPSJS.77SC.78",

language = "English",

volume = "77",

pages = "78--83",

journal = "Journal of the Physical Society of Japan",

issn = "0031-9015",

publisher = "Physical Society of Japan",

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TY - JOUR

T1 - High-pressure studies on superconducting iron-based LaFeAsO 1-xFx, LaFePO and SrFe2As2

AU - Takahashi, Hiroki

AU - Okada, Hironari

AU - Igawa, Kazumi

AU - Arii, Kazunobu

AU - Kamihara, Yoichi

AU - Matsuishi, Satoru

AU - Hirano, Masahiro

AU - Hosono, Hideo

AU - Matsubayashi, Kazuyuki

AU - Uwatoko, Yoshiya

PY - 2008

Y1 - 2008

N2 - Electrical resistivity and magnetic susceptibility measurements under high pressure were performed on iron-based superconductor LaFePO and LaFeAsO 1-xFx system. A steep increase in superconducting transition temperature (Tc) was observed for LaFePO and "optimum-doped" and "over-doped" LaFeAsO1-xF x. Pressure-induced superconductivity was confirmed in undoped LaFeAsO and SrFe2As2 by electrical resistivity measurements under high pressure. X-ray diffraction measurements were also performed under high pressure up to 10 GPa for LaFePO and LaFeAsO 1-xFx system, where the anisotropic decrease of the lattice constants was observed with applying pressure.

AB - Electrical resistivity and magnetic susceptibility measurements under high pressure were performed on iron-based superconductor LaFePO and LaFeAsO 1-xFx system. A steep increase in superconducting transition temperature (Tc) was observed for LaFePO and "optimum-doped" and "over-doped" LaFeAsO1-xF x. Pressure-induced superconductivity was confirmed in undoped LaFeAsO and SrFe2As2 by electrical resistivity measurements under high pressure. X-ray diffraction measurements were also performed under high pressure up to 10 GPa for LaFePO and LaFeAsO 1-xFx system, where the anisotropic decrease of the lattice constants was observed with applying pressure.

KW - High pressure

KW - Iron-based superconductor

KW - LaFeAsO F

KW - LaFePO

KW - Oxypnictide

KW - SrFeAs

KW - Superconductivity

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