Pressure effect of an S=1 Haldane compound NDMAZ

Citation
M. Mito et al., Pressure effect of an S=1 Haldane compound NDMAZ, J PHYS JPN, 69(5), 2000, pp. 1498-1502
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
ISSN journal
0031-9015 → ACNP
Volume
69
Issue
5
Year of publication
2000
Pages
1498 - 1502
Database
ISI
SICI code
0031-9015(200005)69:5<1498:PEOASH>2.0.ZU;2-N
Abstract
We measured the heat capacity of an S = 1. Haldane compound NDMAZ under the pressure to investigate the three-dimensional magnetic ordering due to the anisotropy (D) and/or the interchain interaction. However, the experimenta l result shows that the Haldane gap (Delta) has been enhanced by the pressu re and the magnetic ordering has not been observed. The remarkable increase of intrachain inter action (J) by the pressure will lead to the enhancemen t of Delta. We also discuss about the pressure-induced changes of Delta/\J\ and D/\J\ in this Haldane compound.