ON THE VIOLATION OF MARSHALL-PEIERLS SIGN RULE IN THE FRUSTRATED J1-J2 HEISENBERG-ANTIFERROMAGNET

Authors
RICHTER J IVANOV NB RETZLAFF K
Citation
J. Richter et al., ON THE VIOLATION OF MARSHALL-PEIERLS SIGN RULE IN THE FRUSTRATED J1-J2 HEISENBERG-ANTIFERROMAGNET, Europhysics letters, 25(7), 1994, pp. 545-550
Citations number
16
Categorie Soggetti
Physics
Journal title
Europhysics letters → ACNP
ISSN journal
02955075
Volume
25
Issue
7
Year of publication
1994
Pages
545 - 550
Database
ISI
SICI code
0295-5075(1994)25:7<545:OTVOMS>2.0.ZU;2-T
Abstract
We present a number of arguments in favour of the suggestion that the Marshall-Peierls sign rule survives the frustration in the square-latt ice Heisenberg antiferromagnet with frustrating next-nearest-neighbour (diagonal) bonds (J1-J2 model) for relatively large values of the par ameter J2/J1. Both the spin-wave analysis and the exact-diagonalizatio n data concerning the weight of Marshall states support the above sugg estion.