ESTIMATION OF ELECTRONIC AND STRUCTURAL INFLUENCE ON THE THERMAL MAGNETIC-PROPERTIES OF CLUSTERS

Authors
LINDGARD PA HENDRIKSEN PV
Citation
Pa. Lindgard et Pv. Hendriksen, ESTIMATION OF ELECTRONIC AND STRUCTURAL INFLUENCE ON THE THERMAL MAGNETIC-PROPERTIES OF CLUSTERS, Physical review. B, Condensed matter, 49(17), 1994, pp. 12291-12294
Citations number
19
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
49
Issue
17
Year of publication
1994
Pages
12291 - 12294
Database
ISI
SICI code
0163-1829(1994)49:17<12291:EOEASI>2.0.ZU;2-Q
Abstract
Using an effective Heisenberg model for clusters the spin-wave spectru m is calculated by direct diagonalization. The inclusion of a nonunifo rm magnetization profile at zero temperature, nonuniform exchange inte ractions as a result of structural relaxations, longer-range interacti ons, and of magnetic surface anisotropy have been studied. Very small effects are found on the thermal magnetic properties relative to those predicted for the simple nearest-neighbor Heisenberg model by Hendrik sen, Linderoth, and Lindgard [J. Phys. C 31, 5675 (1993); Phys. Rev. B 48, 7259 (1993)].