NEW INTERPRETATION OF ESR OF THE S=1 2 BROKEN VALENCE-BOND IN ZN-DOPED NENP/

Authors
AJIRO Y UCHIKAWA T ASANO T MEKATA M
Citation
Y. Ajiro et al., NEW INTERPRETATION OF ESR OF THE S=1 2 BROKEN VALENCE-BOND IN ZN-DOPED NENP/, Journal of magnetism and magnetic materials, 177, 1998, pp. 707-708
Citations number
6
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
1
Pages
707 - 708
Database
ISI
SICI code
0304-8853(1998)177:<707:NIOEOT>2.0.ZU;2-2
Abstract
The unique singlet ground state of an S = 1 one-dimensional antiferrom agnet is studied using ESR measurements on NENP, Ni(C2H8N2)(2)NO2(ClO4 ) doped with nonmagnetic Zn2+ impurities. A new interpretation is prop osed to analyze angle-dependent ESR spectra by introducing a model in which the observed signals are due to the S = 1/2 broken valence bond subjected to the field-induced staggered internal fields possibly orig inating from the underlying antiferromagnetic polarization. (C) 1998 E lsevier Science B.V. All rights reserved.