Influence of two-particle excited states on the interatomic exchange interaction in La2CuO4
β Scribed by V. A. Gavrichkov; S. G. Ovchinnikov
- Book ID
- 111446108
- Publisher
- SP MAIK Nauka/Interperiodica
- Year
- 2008
- Tongue
- English
- Weight
- 227 KB
- Volume
- 50
- Category
- Article
- ISSN
- 1063-7834
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π SIMILAR VOLUMES
When La2CuO4 (or (La, Sr)2CuO4) is cooled below the orthorhombic-to-tetragonal phase transition temperature, numerous changes of the phonon response have been observed in neutron as well as in optical spectra. A recently developed transferable potential model applied to the low-T and high-T phases o
were analyzed by examining the structures of their spin monomers and calculating the energy di4erences e in the spin levels of their spin dimers. The trends in the observed J parameters are well explained in terms of the e values obtained from extended HuK ckel molecular orbital calculations. The e