Abstracts 2007

Abstract of Publication No. 565

H. B. Braun, J. Kulda, B. Roessli, D. Visser, K. W. Krämer, H. U. Güdel and P. Böni
Chiral quantum excitations in the anisotropic antiferromagnet CsCoBr3
J. Magn. Magn. Mater. 310, 1194-1196 (2007)      Full Text (PDF)      DOI-Link     

Abstract: Chirality is shown to emerge as a novel degree of freedom of a quantum soliton in the anisotropic spin-1/2 compound CsCoBr3. The soliton chirality, detected via polarized neutron scattering, is in agreement with theoretical predictions and is a manifestation of Berry's phase. Our observations provide an explicit example of the emergence of spin currents and hidden chiral order that accompany the disappearance of antiferromagnetic order.

Last modified: 13.12.11 by Gabriela Frei