QUANTUM RESONANCE OF THE MAGNETIZATION IN A SINGLE-CRYSTAL OF MN-12-AC

Authors
BARBARA B THOMAS L LIONTI F SULPICE A CANESCHI A
Citation
B. Barbara et al., QUANTUM RESONANCE OF THE MAGNETIZATION IN A SINGLE-CRYSTAL OF MN-12-AC, Journal of magnetism and magnetic materials, 177, 1998, pp. 1324-1329
Citations number
54
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
177
Year of publication
1998
Part
2
Pages
1324 - 1329
Database
ISI
SICI code
0304-8853(1998)177:<1324:QROTMI>2.0.ZU;2-X
Abstract
In this study we raise a few questions regarding the hypothesis of con servation of the collective spin in molecular crystals, some of them o f interest for a deeper understanding of resonant tunnelling in Mn-12- ac. We also show experimentally that in this system, resonant tunnelli ng is not solely thermally activated, but takes place from the ground state m = 10 below 2 K. The effects of a quartic anisotropy term on ma gnetization curves and resonance shifts are discussed. (C) 1998 Elsevi er Science B.V. All rights reserved.