3 papers
cond-mat.str-el2006
The Icosahedral Symmetry Antiferromagnetic Heisenberg Model
N. P. Konstantinidis
The antiferromagnetic Heisenberg model on icosahedral symmetry fullerene clusters exhibits unconventional magnetic properties, despite the lack of anisotropic interactions.…
cond-mat.str-el2005
The Antiferromagnetic Heisenberg Model on Clusters with Icosahedral Symmetry
N. P. Konstantinidis
The antiferromagnetic Heisenberg model is considered for spins located on the vertices of the dodecahedron and the icosahedron, which belong to the point symmetry gro…
cond-mat.str-el2003
Spin Polaron Effective Magnetic Model for La_{0.5}Ca_{0.5}MnO_3
N. P. Konstantinidis, C. H. Patterson
The conventional paradigm of charge order for La_{1-x}Ca_xMnO_3 for x=0.5 has been challenged recently by a Zener polaron picture emerging from experiments and theoretical calculat…