| Issue |
Europhys. Lett.
Volume 55, Number 6, September II 2001
|
|
|---|---|---|
| Page(s) | 868 - 873 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2001-00362-7 | |
| Published online | 01 December 2003 | |
Field-induced commensurate long-range order in the Haldane-gap system
1
Physics Department, Brookhaven National Laboratory - Upton, NY 11973, USA
2
RIKEN (The Institute of Physical and Chemical Research)
Wako, Saitama 351-0198, Japan
3
Hahn-Meitner-Institut GmbH - Glienicker Str. 100, 14109 Berlin, Germany
Received:
23
April
2001
Accepted:
29
June
2001
High-field neutron diffraction studies of the new
quantum-disordered S=1 linear-chain antiferromagnet
(NDMAZ) are reported. At T=70 mK, at a critical field
T applied along the [013] direction, a phase
transition to a commensurate Néel-like ordered state is
observed. The results are discussed in the context of existing
theories of quantum phase transitions in Haldane-gap
antiferromagnets, and in comparison with previous studies of the
related system 
(NDMAP).
PACS: 75.10.Jm – Quantized spin models / 75.30.Kz – Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.) / 75.40.-s – Critical-point effects, specific heats, short-range order
© EDP Sciences, 2001
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