%0 Journal Article
%T Quantum spin chain as a potential realization of the Nersesyan-Tsvelik model
%A C. Balz
%A B. Lake
%A H. Luetkens
%A C. Baines
%A T. Guidi
%A M. Abdel-Hafiez
%A A. U. B. Wolter
%A B. B¨ąchner
%A I. V. Morozov
%A E. B. Deeva
%A O. S. Volkova
%A A. N. Vasiliev
%J Physics
%D 2014
%I arXiv
%R 10.1103/PhysRevB.90.060409
%X 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 N\'eel 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.
%U http://arxiv.org/abs/1409.1763v1