Document Detail

Single domain magnetic helicity and triangular chirality in structurally enantiopure Ba3NbFe3Si2O14.
MedLine Citation:
PMID:  19113658     Owner:  NLM     Status:  PubMed-not-MEDLINE    
A novel doubly chiral magnetic order is found in the structurally chiral langasite compound Ba3NbFe3Si2O14. The magnetic moments are distributed over planar frustrated triangular lattices of triangle units. On each of these they form the same triangular configuration. This ferrochiral arrangement is helically modulated from plane to plane. Unpolarized neutron scattering on a single crystal associated with spherical neutron polarimetry proved that a single triangular chirality together with a single helicity is stabilized in an enantiopure crystal. A mean-field analysis allows us to discern the relevance on this selection of a twist in the plane to plane super-superexchange paths.
K Marty; V Simonet; E Ressouche; R Ballou; P Lejay; P Bordet
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Publication Detail:
Type:  Journal Article     Date:  2008-12-09
Journal Detail:
Title:  Physical review letters     Volume:  101     ISSN:  0031-9007     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2008 Dec 
Date Detail:
Created Date:  2008-12-30     Completed Date:  2009-02-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  247201     Citation Subset:  -    
Institut Néel, CNRS and Université Joseph Fourier, BP166, 38042 Grenoble, France.
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