Electronic Resource
Springer
Journal of low temperature physics
99 (1995), S. 359-361
ISSN:
1573-7357
Keywords:
75.10.Jm
;
75.50.Ee
;
71.55.Jv
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We present exact diagonalisation data for the ground state of finite two-dimensional spin 1/2 Heisenberg antiferromagnets with structural disorder. The combination of antiferromagnetic coupling and structural disorder creates frustation and a local singlet formation which may strongly influence the magnetic ordering. In detail we study the magnetic radial distribution function, the magnetic order parameter M2 as well as a parameter measuring the spin misfit and present these quantities in dependence on the strength of the structural disorder. We estimate the critical disorder where the antiferromagnetic long-range order breaks down.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00752309
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