Published April 24, 2000
| Version v1
Journal article
Stripe Conductivity in La1.775Sr0.225NiO4
Creators
- 1. A. A. Galkin Donetsk Phystech NASU, 83114 Donetsk, (Ukraine)
- 2. Institute for Single Crystals NASU, 310001 Kharkov, (Ukraine)
- 3. B. I. Verkin Institute for Low Temperature Physics NASU, 310164 Kharkov, (Ukraine)
- 4. 2. Physikalisches Institut, RWTH Aachen, 52056 Aachen, (Germany)
- 5. Laboratorium fuer Festkoerperphysik, ETH-Zuerich, CH-8093, Zuerich, (Switzerland)
Description
We report Raman light-scattering and optical conductivity measurements on a single crystal of La1.775 Sr0.225 NiO4 which exhibits incommensurate charge-stripe order. The extra phonon peaks induced by stripe order can be understood in terms of the energies of phonons that occur at the charge-order wave vector Qc . A strong Fano antiresonance for a Ni-O bond-stretching mode provides clear evidence for finite dynamical conductivity within the charge stripes. (c) 2000 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 84
- Journal Issue
- 17
- Journal Page Range
- p. 3919-3922
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 32059988
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- CHARGE STATES; EXPERIMENTAL DATA; FANO FACTOR; LANTHANUM OXIDES; LIGHT SCATTERING; NICKEL OXIDES; PHONONS; RAMAN SPECTRA; STRONTIUM OXIDES; X-RAY DIFFRACTION
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; DATA; DIFFRACTION; INFORMATION; LANTHANUM COMPOUNDS; NICKEL COMPOUNDS; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; QUASI PARTICLES; RARE EARTH COMPOUNDS; SCATTERING; SPECTRA; STRONTIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS
- Proposed descriptors and Free-text terms
- optical conductivity; charge-ordered states