CuO-chain Raman scattering and photoinduced metastability in YBa2Cu3Ox

M. Käll; M. Osada; M. Kakihana; L. Börjesson; T. Frello; J. Madsen; N.H. Andersen; R. Liang; P. Dosanjh; W.N. Hardy

doi:10.1103/PhysRevB.57.R14072

CuO-chain Raman scattering and photoinduced metastability in YBa₂Cu₃O_x

M. Käll
, M. Osada
, M. Kakihana
, L. Börjesson
, T. Frello
, J. Madsen
, N.H. Andersen
, R. Liang
, P. Dosanjh
, W.N. Hardy

Research output: Contribution to journal › Journal article › Research

Abstract

Raman measurements in YBa2Cu3Ox (x=6.72-6.82) high-T-c superconductors reveal intense phonon scattering due to an electronic resonance localized near oxygen vacancies on the CuO chains. Below room temperature the resonance can be photobleached in a manner similar to reported persistent photoinduced superconductivity effects, indicating photon-assisted oxygen ordering or electron vacancy capture. By comparing Raman and x-ray diffraction data we establish a correlation between the stability of the photoinduced state and the oxygen-ordering kinetics in the CuO chains.

Original language	English
Journal	Physical Review B-Condensed Matter
Volume	57
Issue number	22
Pages (from-to)	R14072-R14075
ISSN	0163-1829
DOIs	https://doi.org/10.1103/PhysRevB.57.R14072
Publication status	Published - 1998

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Cite this

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title = "CuO-chain Raman scattering and photoinduced metastability in YBa2Cu3Ox",

abstract = "Raman measurements in YBa2Cu3Ox (x=6.72-6.82) high-T-c superconductors reveal intense phonon scattering due to an electronic resonance localized near oxygen vacancies on the CuO chains. Below room temperature the resonance can be photobleached in a manner similar to reported persistent photoinduced superconductivity effects, indicating photon-assisted oxygen ordering or electron vacancy capture. By comparing Raman and x-ray diffraction data we establish a correlation between the stability of the photoinduced state and the oxygen-ordering kinetics in the CuO chains.",

keywords = "Nye funktionelle materialer",

author = "M. K{\"a}ll and M. Osada and M. Kakihana and L. B{\"o}rjesson and T. Frello and J. Madsen and N.H. Andersen and R. Liang and P. Dosanjh and W.N. Hardy",

year = "1998",

doi = "10.1103/PhysRevB.57.R14072",

language = "English",

volume = "57",

pages = "R14072--R14075",

journal = "Physical Review B-Condensed Matter",

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TY - JOUR

T1 - CuO-chain Raman scattering and photoinduced metastability in YBa2Cu3Ox

AU - Käll, M.

AU - Osada, M.

AU - Kakihana, M.

AU - Börjesson, L.

AU - Frello, T.

AU - Madsen, J.

AU - Andersen, N.H.

AU - Liang, R.

AU - Dosanjh, P.

AU - Hardy, W.N.

PY - 1998

Y1 - 1998

N2 - Raman measurements in YBa2Cu3Ox (x=6.72-6.82) high-T-c superconductors reveal intense phonon scattering due to an electronic resonance localized near oxygen vacancies on the CuO chains. Below room temperature the resonance can be photobleached in a manner similar to reported persistent photoinduced superconductivity effects, indicating photon-assisted oxygen ordering or electron vacancy capture. By comparing Raman and x-ray diffraction data we establish a correlation between the stability of the photoinduced state and the oxygen-ordering kinetics in the CuO chains.

AB - Raman measurements in YBa2Cu3Ox (x=6.72-6.82) high-T-c superconductors reveal intense phonon scattering due to an electronic resonance localized near oxygen vacancies on the CuO chains. Below room temperature the resonance can be photobleached in a manner similar to reported persistent photoinduced superconductivity effects, indicating photon-assisted oxygen ordering or electron vacancy capture. By comparing Raman and x-ray diffraction data we establish a correlation between the stability of the photoinduced state and the oxygen-ordering kinetics in the CuO chains.

KW - Nye funktionelle materialer

U2 - 10.1103/PhysRevB.57.R14072

DO - 10.1103/PhysRevB.57.R14072

M3 - Journal article

SN - 0163-1829

VL - 57

SP - R14072-R14075

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

IS - 22