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RAMAN-STUDY OF R0.5PR0.5BA2CU3O7-DELTA (R=Y, RARE-EARTH)

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RAMAN-STUDY OF R0.5PR0.5BA2CU3O7-DELTA (R=Y, RARE-EARTH) (EN)
LIAROKAPIS, E (EN)
PSYHARIS, V (EN)
MITROS, C (EN)
ILIEV, M (EN)
KOUFOUDAKIS, A (EN)
ABRASHEV, M (EN)
BOGACHEV, G (EN)
POULAKIS, N (EN)
journalArticle (EN)
2014-03-01T01:42:55Z
1994 (EN)
The polarized Raman scattering of the R0.5Pr0.5Ba2Cu3O7-delta series (R = La, Pr, Nd, Sm, Eu, Gd, Dy, Y, Ho, Er, Tm, Yb, Lu; delta approximately 0) which undergoes a superconductor-to-nonsuperconductor transition between R = Gd and Dy was studied. It was found that the appearance of superconductivity correlates with observation of a two-mode behavior of the R-ion-size-sensitive B1g-like mode of 0(2),O(3) out-of-phase vibrations. It was also established that the Ba (xx,A(g)) phonon line is of asymmetrical (Fano) shape for all R. The origin of the Fano effect usually attributed to interference with an electronic continuum is discussed. (EN)
Physics, Condensed Matter (EN)
HIGH-TC SUPERCONDUCTORS (EN)
ENERGY (EN)
MODES (EN)
SINGLE-PHASE Y1-XPRXBA2CU3O7-DELTA (EN)
YBA2CU3O7 (EN)
CRYSTALS (EN)
NORMAL-STATE PROPERTIES (EN)
CONTINUUM (EN)
SCATTERING (EN)
ELECTRONIC-STRUCTURE (EN)
PHYSICAL REVIEW B (EN)
English
AMERICAN PHYSICAL SOC (EN)
National Technical University of Athens
Digital Library of National Technical University of Athens | Dspace@NTUA
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