High-pressure studies on superconductivity in LaFeAsO 1-x F x and SmFeAsO 1-x F x

H. Takahashi, H. Okada, K. Igawa, Yoichi Kamihara, M. Hirano, H. Hosono, K. Matsubayashi, Y. Uwatoko

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The pressure dependence on the superconducting transition temperature (T c ) was investigated for the iron-based superconductors LaFeAsO 1-x F x and SmFeAsO 1-x F x . The T c 's increase largely for LaFeAsO 1-x F x with a small increase of pressure, while a sharp decrease of T c was observed for SmFeAsO 1-x F x . The electrical resistivity measurements reveal pressure-induced superconductivity for undoped LaFeAsO and SmFeAsO. These pressure effects seem to be related to an anisotropic decrease of the lattice constants under high pressure from the x-ray diffraction measurements up to 10 GPa for the LaFeAsO 1-x F x system.

Original languageEnglish
Pages (from-to)595-598
Number of pages4
JournalJournal of Superconductivity and Novel Magnetism
Volume22
Issue number6
DOIs
Publication statusPublished - 2009 Aug
Externally publishedYes

Fingerprint

pressure effects
pressure measurement
Superconductivity
pressure dependence
x ray diffraction
superconductivity
transition temperature
iron
electrical resistivity
Pressure effects
Pressure measurement
Superconducting transition temperature
Lattice constants
Diffraction
X rays

Keywords

  • High-pressure
  • LaFeAsO F
  • Pressure-induced superconductivity
  • SmFeAsO F

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

High-pressure studies on superconductivity in LaFeAsO 1-x F x and SmFeAsO 1-x F x . / Takahashi, H.; Okada, H.; Igawa, K.; Kamihara, Yoichi; Hirano, M.; Hosono, H.; Matsubayashi, K.; Uwatoko, Y.

In: Journal of Superconductivity and Novel Magnetism, Vol. 22, No. 6, 08.2009, p. 595-598.

Research output: Contribution to journalArticle

Takahashi, H, Okada, H, Igawa, K, Kamihara, Y, Hirano, M, Hosono, H, Matsubayashi, K & Uwatoko, Y 2009, 'High-pressure studies on superconductivity in LaFeAsO 1-x F x and SmFeAsO 1-x F x ', Journal of Superconductivity and Novel Magnetism, vol. 22, no. 6, pp. 595-598. https://doi.org/10.1007/s10948-009-0475-8
Takahashi, H. ; Okada, H. ; Igawa, K. ; Kamihara, Yoichi ; Hirano, M. ; Hosono, H. ; Matsubayashi, K. ; Uwatoko, Y. / High-pressure studies on superconductivity in LaFeAsO 1-x F x and SmFeAsO 1-x F x In: Journal of Superconductivity and Novel Magnetism. 2009 ; Vol. 22, No. 6. pp. 595-598.
@article{2f3fb37a7d4a43c8a48f50879ba29f41,
title = "High-pressure studies on superconductivity in LaFeAsO 1-x F x and SmFeAsO 1-x F x",
abstract = "The pressure dependence on the superconducting transition temperature (T c ) was investigated for the iron-based superconductors LaFeAsO 1-x F x and SmFeAsO 1-x F x . The T c 's increase largely for LaFeAsO 1-x F x with a small increase of pressure, while a sharp decrease of T c was observed for SmFeAsO 1-x F x . The electrical resistivity measurements reveal pressure-induced superconductivity for undoped LaFeAsO and SmFeAsO. These pressure effects seem to be related to an anisotropic decrease of the lattice constants under high pressure from the x-ray diffraction measurements up to 10 GPa for the LaFeAsO 1-x F x system.",
keywords = "High-pressure, LaFeAsO F, Pressure-induced superconductivity, SmFeAsO F",
author = "H. Takahashi and H. Okada and K. Igawa and Yoichi Kamihara and M. Hirano and H. Hosono and K. Matsubayashi and Y. Uwatoko",
year = "2009",
month = "8",
doi = "10.1007/s10948-009-0475-8",
language = "English",
volume = "22",
pages = "595--598",
journal = "Journal of Superconductivity and Novel Magnetism",
issn = "1557-1939",
publisher = "Springer New York",
number = "6",

}

TY - JOUR

T1 - High-pressure studies on superconductivity in LaFeAsO 1-x F x and SmFeAsO 1-x F x

AU - Takahashi, H.

AU - Okada, H.

AU - Igawa, K.

AU - Kamihara, Yoichi

AU - Hirano, M.

AU - Hosono, H.

AU - Matsubayashi, K.

AU - Uwatoko, Y.

PY - 2009/8

Y1 - 2009/8

N2 - The pressure dependence on the superconducting transition temperature (T c ) was investigated for the iron-based superconductors LaFeAsO 1-x F x and SmFeAsO 1-x F x . The T c 's increase largely for LaFeAsO 1-x F x with a small increase of pressure, while a sharp decrease of T c was observed for SmFeAsO 1-x F x . The electrical resistivity measurements reveal pressure-induced superconductivity for undoped LaFeAsO and SmFeAsO. These pressure effects seem to be related to an anisotropic decrease of the lattice constants under high pressure from the x-ray diffraction measurements up to 10 GPa for the LaFeAsO 1-x F x system.

AB - The pressure dependence on the superconducting transition temperature (T c ) was investigated for the iron-based superconductors LaFeAsO 1-x F x and SmFeAsO 1-x F x . The T c 's increase largely for LaFeAsO 1-x F x with a small increase of pressure, while a sharp decrease of T c was observed for SmFeAsO 1-x F x . The electrical resistivity measurements reveal pressure-induced superconductivity for undoped LaFeAsO and SmFeAsO. These pressure effects seem to be related to an anisotropic decrease of the lattice constants under high pressure from the x-ray diffraction measurements up to 10 GPa for the LaFeAsO 1-x F x system.

KW - High-pressure

KW - LaFeAsO F

KW - Pressure-induced superconductivity

KW - SmFeAsO F

UR - http://www.scopus.com/inward/record.url?scp=67650095180&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67650095180&partnerID=8YFLogxK

U2 - 10.1007/s10948-009-0475-8

DO - 10.1007/s10948-009-0475-8

M3 - Article

AN - SCOPUS:67650095180

VL - 22

SP - 595

EP - 598

JO - Journal of Superconductivity and Novel Magnetism

JF - Journal of Superconductivity and Novel Magnetism

SN - 1557-1939

IS - 6

ER -