Angle-resolved valence-band photoemission study of the quenched superconductors: Y1−xPrxBa2Cu3O7−δ
| Autor: | B. I. Min, J.-S. Kang, C. G. Olson, S. Haffner, Soon-Ju Kwon, M. B. Maple, J. H. Kim |
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| Rok vydání: | 2003 |
| Předmět: |
Superconductivity
Materials science Valence (chemistry) Condensed matter physics Photoemission spectroscopy Binding energy Angle-resolved photoemission spectroscopy Electronic structure Electrical and Electronic Engineering Condensed Matter Physics Spectroscopy Type-II superconductor Electronic Optical and Magnetic Materials |
| Zdroj: | Physica B: Condensed Matter. 328:15-19 |
| ISSN: | 0921-4526 |
| DOI: | 10.1016/s0921-4526(02)01799-4 |
| Popis: | The electronic structures of the quenched superconductivity system Y 1-x Pr x Ba 2 Cu 3 O 7-δ (YPrBCO; x = 0, 0.4, 0.8) have been investigated by angle-resolved photoemission spectroscopy (ARPES). With increasing x, the ARPES spectra along Γ → S exhibit a binding energy shift away from E F and a pronounced decrease in the density of electronic states near E F , suggesting an enhanced size of the Fermi wave vector k F from S for x = 0.4, as compared to x = 0. The ARPES results have been compared with the LSDA + U electronic structure calculations incorporating the spin-orbit interaction for PrBa 2 Cu 3 O 7 . |
| Databáze: | OpenAIRE |
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