Photoinduced metastability in YBa2Cu3Ox studied by in situ Raman scattering

M. Osada; M. Kakihana; J. Bäckström; M. Kall; L. Borjesson; T. Frello; N. H. Andersen; R. Liang; P. Dosanjh; W. N. Hardy

Photoinduced metastability in YBa₂Cu₃O_x studied by in situ Raman scattering

M. Osada^*, M. Kakihana, J. Bäckström, M. Kall, L. Borjesson, T. Frello, N. H. Andersen, R. Liang, P. Dosanjh, W. N. Hardy

^*Corresponding author for this work

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

Abstract

We study the photoinduced metastable states in oxygen deficient YBa₂Cu₃O_x (x = 6.35 - 6.87). The states are identified by the intensity dependences of the CuO-chain resonance with photo irradiation and temperature. Below room temperature (RT) the CuO-chain resonance can be completely suppressed by irradiation with visible light polarized along the CuO chains, indicating photo-assisted oxygen ordering. Above RT the resonance intensity returns and saturates at T > 100°C. This behavior exactly mirrors the temperature dependence of chain oxygen ordering observed by hard X-ray diffraction. The stability of the photo-induced state is in line with the reported persistent photo-induced superconductivity effects.

Original language	English
Pages (from-to)	681-682
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	284-288
Issue number	PART I
Publication status	Published - 2000
Externally published	Yes

Keywords

Oxygen ordering
Photo-induced metastability
Raman scattering
Y-based cuprates

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

Cite this

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title = "Photoinduced metastability in YBa2Cu3Ox studied by in situ Raman scattering",

abstract = "We study the photoinduced metastable states in oxygen deficient YBa2Cu3Ox (x = 6.35 - 6.87). The states are identified by the intensity dependences of the CuO-chain resonance with photo irradiation and temperature. Below room temperature (RT) the CuO-chain resonance can be completely suppressed by irradiation with visible light polarized along the CuO chains, indicating photo-assisted oxygen ordering. Above RT the resonance intensity returns and saturates at T > 100°C. This behavior exactly mirrors the temperature dependence of chain oxygen ordering observed by hard X-ray diffraction. The stability of the photo-induced state is in line with the reported persistent photo-induced superconductivity effects.",

keywords = "Oxygen ordering, Photo-induced metastability, Raman scattering, Y-based cuprates",

author = "M. Osada and M. Kakihana and J. B{\"a}ckstr{\"o}m and M. Kall and L. Borjesson and T. Frello and Andersen, {N. H.} and R. Liang and P. Dosanjh and Hardy, {W. N.}",

year = "2000",

language = "English",

volume = "284-288",

pages = "681--682",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

number = "PART I",

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TY - JOUR

T1 - Photoinduced metastability in YBa2Cu3Ox studied by in situ Raman scattering

AU - Osada, M.

AU - Kakihana, M.

AU - Bäckström, J.

AU - Kall, M.

AU - Borjesson, L.

AU - Frello, T.

AU - Andersen, N. H.

AU - Liang, R.

AU - Dosanjh, P.

AU - Hardy, W. N.

PY - 2000

Y1 - 2000

N2 - We study the photoinduced metastable states in oxygen deficient YBa2Cu3Ox (x = 6.35 - 6.87). The states are identified by the intensity dependences of the CuO-chain resonance with photo irradiation and temperature. Below room temperature (RT) the CuO-chain resonance can be completely suppressed by irradiation with visible light polarized along the CuO chains, indicating photo-assisted oxygen ordering. Above RT the resonance intensity returns and saturates at T > 100°C. This behavior exactly mirrors the temperature dependence of chain oxygen ordering observed by hard X-ray diffraction. The stability of the photo-induced state is in line with the reported persistent photo-induced superconductivity effects.

AB - We study the photoinduced metastable states in oxygen deficient YBa2Cu3Ox (x = 6.35 - 6.87). The states are identified by the intensity dependences of the CuO-chain resonance with photo irradiation and temperature. Below room temperature (RT) the CuO-chain resonance can be completely suppressed by irradiation with visible light polarized along the CuO chains, indicating photo-assisted oxygen ordering. Above RT the resonance intensity returns and saturates at T > 100°C. This behavior exactly mirrors the temperature dependence of chain oxygen ordering observed by hard X-ray diffraction. The stability of the photo-induced state is in line with the reported persistent photo-induced superconductivity effects.

KW - Oxygen ordering

KW - Photo-induced metastability

KW - Raman scattering

KW - Y-based cuprates

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M3 - Article

AN - SCOPUS:0033687586

SN - 0921-4526

VL - 284-288

SP - 681

EP - 682

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - PART I

ER -

Photoinduced metastability in YBa₂Cu₃O_x studied by in situ Raman scattering

Abstract

Keywords

ASJC Scopus subject areas

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