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|Title: ||Impurity-Induced Magnetic Order in Low-Dimensional Spin-Gapped Materials|
|Authors: ||BOBROFF, J|
|Keywords: ||long-range order|
|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.|
|Appears in Collections:||Article|
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