Published March 1996
| Version v1
Journal article
Charge transfer in high-Tc (Y/Pr)Ba2Cu3O7 superlattices
- 1. Institut fuer Physik, Johannes-Gutenberg-Universitaet Mainz, D-55099 Mainz (Germany)
- 2. Institut fuer Festkoerperphysik, Technische Hochschule Darmstadt, D-64289 Darmstadt (Germany)
Description
We comment on the charge-transfer model for the unique softening of the apex [O(4)] oxygen observed in Raman spectra of a- and c-oriented (YBa2Cu3O7)m(PrBa2Cu3O7)n superlattices presented in a recent paper by Ham et al. [Phys. Rev. B 50, 16598 (1994)]. We find the size of the charge transfer necessary for the observed shift too large to explain the observations. In addition, a conclusion about the unique behavior of both types of superlattices can only be drawn if the sample quality is properly considered. copyright 1996 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter
- Journal Volume
- 53
- Journal Issue
- 10
- Journal Page Range
- p. 6836-6837.
- ISSN
- 0163-1829
- CODEN
- PRBMDO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 27080474
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- BARIUM OXIDES; CHARGE-EXCHANGE INTERACTIONS; CRYSTAL DOPING; CRYSTAL MODELS; CUPRATES; DATA ANALYSIS; EXPERIMENTAL DATA; FERMI LEVEL; HIGH-TC SUPERCONDUCTORS; HOLES; INTERATOMIC FORCES; PRASEODYMIUM OXIDES; RAMAN SPECTRA; SUBSTOICHIOMETRY; SUPERLATTICES; TRANSITION TEMPERATURE; VALENCE; YTTRIUM OXIDES; ZINC ADDITIONS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; BASIC INTERACTIONS; CHALCOGENIDES; COPPER COMPOUNDS; DATA; ENERGY LEVELS; INFORMATION; INTERACTIONS; MATHEMATICAL MODELS; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PRASEODYMIUM COMPOUNDS; RARE EARTH COMPOUNDS; SPECTRA; STRONG INTERACTIONS; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS