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Resonant Raman scattering and photoinduced metastability in oxygen-deficient YBa2Cu3Ox
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2000 (English)In: Physica C, Vol. 338, 157-160 p.Article in journal (Refereed) Published
Abstract [en]

We studied the photoinduced metastable states in oxygen-deficient YBa2Cu3Ox (Y123) (x = 6.35-6.87). The states are identified by the intensity dependences of CuO-chain resonance on 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 degrees C. This behavior exactly reflects the temperature dependence of chain oxygen ordering in the same crystals observed by hard X-ray diffraction. The stability of the photo-induced state is in agreement with reported persistent photo-induced superconductivity effects. (C) 2000 Elsevier Science B.V. All rights reserved.

Place, publisher, year, edition, pages
2000. Vol. 338, 157-160 p.
Identifiers
URN: urn:nbn:se:miun:diva-14354OAI: oai:DiVA.org:miun-14354DiVA: diva2:435745
Note
Osada, M Kakihana, M Backstrom, J Kall, M Borjesson, L International Discussion Meeting on Chemistry Approaches to High-T(c) Superconductive Materials/5th International Workshop on Chemical Designing and Process on High-T(C) Superconductors OCT 15-16, 1999 NAGATSUTA, JAPANAvailable from: 2011-08-19 Created: 2011-08-19 Last updated: 2011-11-27Bibliographically approved

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