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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4533

Title: Impurity-Induced Magnetic Order in Low-Dimensional Spin-Gapped Materials
Authors: BOBROFF, J
LAFLORENCIE, N
ALEXANDER, LK
MAHAJAN, AV
KOTESWARARAO, B
MENDELS, P
Keywords: long-range order
nonmagnetic impurities
ladder systems
peierls
cugeo3
zn
antiferromagnets
transition
compound
srcu2o3
Issue Date: 2009
Publisher: AMER PHYSICAL SOC
Citation: PHYSICAL REVIEW LETTERS, 103(4), -
Abstract: We have studied the effect of nonmagnetic Zn impurities in the coupled spin ladder Bi(Cu(1-x)Zn(x))(2)PO(6) using (31)P NMR, muon spin resonance (mu SR), and quantum Monte Carlo simulations. Our results show that the impurities induce in their vicinity antiferromagnetic polarizations, extending over a few unit cells. At low temperature, these extended moments freeze in a process which is found universal among various other spin-gapped compounds: isolated ladders, Haldane, or spin-Peierls chains. This allows us to propose a simple common framework to explain the generic low-temperature impurity-induced freezings observed in low-dimensional spin-gapped materials.
URI: http://dx.doi.org/10.1103/PhysRevLett.103.047201
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4533
http://hdl.handle.net/10054/4533
ISSN: 0031-9007
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