Raman scattering in YBa2Cu4O8 and PrBa2Cu4O8 - indications of pseudogap effects in non-superconducting PrBa2Cu4O8

J. Bäckström, M. Rübhausen, M. Käll, L. Börjesson, A. P. Litvinchuk, M. Kakihana, M. Osada, B. Dabrowski

研究成果: Conference article査読


By analysis of the temperature evolution of Raman spectra, we connect an observed suppression 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 suppression 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 pseudogap opens up around 150 K also in this material.

ジャーナルPhysica C: Superconductivity and its applications
341-348 (IV)
出版ステータスPublished - 2000 11
イベントInternational Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors VI - Houston, TX, USA
継続期間: 2000 2 202000 2 25

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学


「Raman scattering in YBa<sub>2</sub>Cu<sub>4</sub>O<sub>8</sub> and PrBa<sub>2</sub>Cu<sub>4</sub>O<sub>8</sub> - indications of pseudogap effects in non-superconducting PrBa<sub>2</sub>Cu<sub>4</sub>O<sub>8</sub>」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。