Magnetic order and moment distribution in doped spin-chain systems
Artikel i vetenskaplig tidskrift, 2004

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.

Impurity

Antiferromagnetic order

Spin chain

Författare

Sebastian Eggert

Chalmers, Institutionen för teoretisk fysik och mekanik, Fasta tillståndets teori

Ian Affleck

University of British Columbia (UBC)

Journal of Magnetism and Magnetic Materials

0304-8853 (ISSN)

Vol. 272-276 Suppl. E647-

Ämneskategorier

Fysik

DOI

10.1016/j.jmmm.2003.12.1088