Journal of the Physical Society of Japan
Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015
Observation of Spin-Gap State in Two-Dimensional Spin-1 Kagom\acutee Antiferromagnet m-MPYNN·BF4
Nobuo WadaTatsuya KobayashiHideo YanoTsunehisa OkunoAkira YamaguchiKunio Awaga
Author information
JOURNAL RESTRICTED ACCESS

1997 Volume 66 Issue 4 Pages 961-964

Details
Abstract
Low temperature properties of the organic spin-1 Kagomé antiferromagnet, m-MPYNN·BF4, have been studied by measuring heat capacity and magnetic susceptibility down to 35 mK. The heat capacity maximum due to a magnetic short-range order was observed at 1.4 K, which is about half of the antiferromagnetic interaction 2\lceilJ\ ceil/kB=3.1 K in the Kagomé lattice. As temperature decreases, the susceptibility begins to decrease below 0.24 K. The susceptibilities both parallel and perpendicular to the Kagomé lattice collapse to almost zero at the lowest temperature, which indicates a nonmagnetic ground state. The temperature dependence suggests that the gap energy of the magnetic state is about 0.25 K.
Content from these authors

This article cannot obtain the latest cited-by information.

© The Physical Society of Japan 1997
Previous article Next article
feedback
Top