Local magnetic properties of periodic nonuniform spin-1/2 XX chains
arXiv:cond-mat/0010120 · doi:10.1016/S0304-8853(00)00566-7
Abstract
Using the Jordan-Wigner fermionization, Green function approach and continued fractions we examine rigorously the local magnetizations and the local static susceptibilities of the spin-1/2 XX chain in a transverse field with regularly varying exchange interactions. We discuss our findings from a viewpoint of the strong-coupling approach.
15 pages, latex, 3 figures
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