Magnetization process of an <i>S=1</i> linear-chain Heisenberg antiferromagnet

K. Katsumata; H. Hori; T. Takeuchi; M. Date; A. Yamagishi; J. P. Renard

doi:10.1103/PhysRevLett.63.86

Magnetization process of an S=1 linear-chain Heisenberg antiferromagnet

K. Katsumata, H. Hori, T. Takeuchi, M. Date, A. Yamagishi, and J. P. Renard

Phys. Rev. Lett. 63, 86 – Published 3 July 1989

Abstract

Magnetization measurements in strong pulsed magnetic fields on single-crystal samples of the S=1 linear-chain Heisenberg antiferromagnet Ni( $C_{2}$ $H_{8}$ $H_{2}$ $)_{2}$ ${NO}_{2}$ ( ${ClO}_{4}$ ) are reported. The magnetization is very small at the low-field region and begins to increase sharply at a finite field for all of the three principal axes. This is evidence for the existence of the Haldane gap in this compound.

Received 10 April 1989

DOI:https://doi.org/10.1103/PhysRevLett.63.86

Authors & Affiliations

K. Katsumata

The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama 351-01, Japan

H. Hori, T. Takeuchi, and M. Date

Department of Physics, Faculty of Science, Osaka University, Toyonaka, Osaka 560, Japan

A. Yamagishi

The Research Center for Extreme Materials, Osaka University, Toyonaka, Osaka 560, Japan

J. P. Renard

Institut d’Electronique Fondamentale, Centre National de la Recherche Scientifique UA22, Bâtiment 220, Université Paris–Sud, 91405, Orsay CEDEX, France