Published July 1, 1996
| Version v1
Journal article
Spin-waves in the mid-infrared spectrum of antiferromagnetic YBa2Cu3O6.0
- 1. Karlsruhe Univ. (T.H.) (Germany). Inst. fuer Angewandte Physik
- 2. Karlsruhe Univ. (T.H.) (Germany). Inst. fuer Theorie der Kondensierten Materie
Description
The mid-infrared spin-wave spectrum of antiferromagnetic YBa2Cu3O6.0 was determined by infrared transmission and reflection measurements (k parallel c) at T=10 K. Excitation of single magnons of the optical branch was observed at Eop=178.0 meV. Two further peaks at 346 meV (∼1.94Eop) and 470 meV (∼2.6Eop) both belong to the two-magnon spectrum. Linear spin-wave theory is in good agreement with the measured two-magnon spectrum, and allows to determine the exchange constant J to be about 120 meV, whereas the intrabilayer coupling J12 is approximately 0.5J. (orig.)
Additional details
Publishing Information
- Journal Title
- Europhysics Letters
- Journal Volume
- 35
- Journal Issue
- 1
- Journal Page Range
- p. 55-60.
- ISSN
- 0295-5075
- CODEN
- EULEEJ
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 27065007
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANTIFERROMAGNETIC MATERIALS; BARIUM OXIDES; COPPER OXIDES; HIGH-TC SUPERCONDUCTORS; INFRARED SPECTRA; MAGNONS; QUATERNARY COMPOUNDS; SPIN WAVES; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; AMINES; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; MAGNETIC MATERIALS; MATERIALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; QUASI PARTICLES; SPECTRA; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS