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Magnetic order and moment distribution in doped spin-chain systems

Sebastian Eggert (Institutionen för teoretisk fysik och mekanik, Fasta tillståndets teori) ; Ian Affleck
Journal of Magnetism and Magnetic Materials (0304-8853). Vol. 272-276 (2004), Suppl., p. E647.
[Artikel, refereegranskad vetenskaplig]

We consider the effect of doping on the magnetic order in quasi one-dimensional (1D) antiferromagnets. First the detailed magnetic response of nite spin-1 2 chains in the presence of a staggered eld is determined, which by itself shows an interesting crossover as function of length and eld strength. We can then understand the ordering by including an effective coupling between the chains, which results in a N!eel-ordered phase at low temperatures, but with a broad distribution of magnetic moments that has to be determined self-consistently.

Nyckelord: Spin chain, Antiferromagnetic order, Impurity

Denna post skapades 2006-08-29. Senast ändrad 2013-07-02.
CPL Pubid: 1636


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Institutionen för teoretisk fysik och mekanik, Fasta tillståndets teori (1900-2005)



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