ON THE IMPORTANCE OF ANISOTROPIC EXCHANGE COUPLING ON TO THE STRUCTURE OF SPIN-POLARIZED CLUSTERS IN LAYERED CUPRATES

Authors
EREMIN MV SIGMUND E
Citation
Mv. Eremin et E. Sigmund, ON THE IMPORTANCE OF ANISOTROPIC EXCHANGE COUPLING ON TO THE STRUCTURE OF SPIN-POLARIZED CLUSTERS IN LAYERED CUPRATES, Solid state communications, 91(5), 1994, pp. 367-370
Citations number
11
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
91
Issue
5
Year of publication
1994
Pages
367 - 370
Database
ISI
SICI code
0038-1098(1994)91:5<367:OTIOAE>2.0.ZU;2-7
Abstract
The low energy spectrum of spin-polarized clusters in layered cuprates is examined. Two types of clusters confining the motion of oxygen hol es are discussed. The ground state of the pentanuclear copper cluster has a total spin S = 2, whereas the one of the tetranuclear copper clu ster is characterised by S = 3/2. Anisotropic exchange coupling splits the magnetic ground state into a sequence of states, which in a natur al way provide e.g. an explanation of EPR data for La2CuO4+delta compo unds.