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Phys. Rev. Lett. 99, 017202 (2007) [4 pages]Chiral-Like Critical Behavior in the Antiferromagnet Cobalt Glycerolate
Received 9 January 2007; published 3 July 2007
Critical exponents closely matching those of the N=2 chiral universality class have been obtained for the layered magnetic system cobalt glycerolate using muon spin relaxation. This class was originally introduced to represent geometrically frustrated triangular stacked-layer XY magnets with chiral noncollinear spin structures. Since the present magnetic system is a canted XY system without geometrical frustration or chiral degeneracy, the results indicate that the order parameter for canting in this system plays a similar role to the chiral order parameter in the geometrically frustrated systems, strongly suggesting that both types of noncollinear system share the same universality class. ©2007 The American Physical Society
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