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Impurity-Induced Magnetic Order in Low-Dimensional Spin-Gapped Materials

DSpace at IIT Bombay

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Title Impurity-Induced Magnetic Order in Low-Dimensional Spin-Gapped Materials
 
Creator BOBROFF, J
LAFLORENCIE, N
ALEXANDER, LK
MAHAJAN, AV
KOTESWARARAO, B
MENDELS, P
 
Subject long-range order
nonmagnetic impurities
ladder systems
peierls
cugeo3
zn
antiferromagnets
transition
compound
srcu2o3
 
Description 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.
 
Publisher AMER PHYSICAL SOC
 
Date 2011-07-16T21:19:25Z
2011-12-26T12:49:58Z
2011-12-27T05:35:49Z
2011-07-16T21:19:25Z
2011-12-26T12:49:58Z
2011-12-27T05:35:49Z
2009
 
Type Article
 
Identifier PHYSICAL REVIEW LETTERS, 103(4), -
0031-9007
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
 
Language en