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Raman scattering in YBa2Cu4O8 and PrBa2Cu4O8 - indications of pseudogap effects in non-superconducting PrBa2Cu4O8
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2000 (engelsk)Inngår i: Physica. C, Superconductivity, ISSN 0921-4534, E-ISSN 1873-2143, Vol. 341, s. 2251-2252Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

By analysis of the temperature evolution of Raman spectra, we connect an observed supression in low-energy electronic density of states to an anomalous sharpening of the Ba-phonon mode in superconducting YBa2Cu4O8 (Y-124) at around T=150 K. We link the supression of electronic excitations to an opening of a pseudogap. Similar effects observed for the Ba-phonon mode at roughly the same temperature in non-superconducting PrBa2Cu4O8 (Pr-124) suggests that a pseduogap opens up around 150 K also in this material.

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2000. Vol. 341, s. 2251-2252
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Identifikatorer
URN: urn:nbn:se:miun:diva-14338OAI: oai:DiVA.org:miun-14338DiVA, id: diva2:435992
Merknad
Times Cited: 0 Part 4 International Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors VI FEB 20-25, 2000 HOUSTON, TEXASTilgjengelig fra: 2011-08-22 Laget: 2011-08-19 Sist oppdatert: 2017-12-08bibliografisk kontrollert

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Bäckström, Joakim

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