Quantum spin chain as a potential realization of the Nersesyan-Tsvelik model

It is well established that long-range magnetic order is suppressed in magnetic systems whose interactions are low-dimensional. The prototypical example is the S-1/2 Heisenberg antiferromagnetic chain (S-1/2 HAFC) whose ground state is quantum critical. In real S-1/2 HAFC compounds interchain coupli...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2014-09
Main Authors: Balz, C, Lake, B, Luetkens, H, Baines, C, Guidi, T, Abdel-Hafiez, M, Wolter, A U B, Büchner, B, Morozov, I V, Deeva, E B, Volkova, O S, Vasiliev, A N
Format: Article
Language:English
Subjects:
Antiferromagnetism
Chains
Coupling (molecular)
Curie temperature
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:It is well established that long-range magnetic order is suppressed in magnetic systems whose interactions are low-dimensional. The prototypical example is the S-1/2 Heisenberg antiferromagnetic chain (S-1/2 HAFC) whose ground state is quantum critical. In real S-1/2 HAFC compounds interchain coupling induces long-range magnetic order although with a suppressed ordered moment and reduced Néel temperature compared to the Curie-Weiss temperature. Recently, it was suggested that order can also be suppressed if the interchain interactions are frustrated, as for the Nersesyan-Tsvelik model. Here, we study the new S-1/2 HAFC, (NO)[Cu(NO3)3]. This material shows extreme suppression of order which furthermore is incommensurate revealing the presence of frustration consistent with the Nersesyan-Tsvelik model.
ISSN:2331-8422
DOI:10.48550/arxiv.1409.1763