2 papers
cond-mat.stat-mech2010
Spin vortices and vacancies: interactions and pinning on a square lattice
Oleksandr Kapikranian, Yurij Holovatch
The study gives a decisive answer to the recently risen question about the type and origin of interaction between spin vortices and spin vacancies in 2D spin models. The approach i…
cond-mat.stat-mech2006
Finite size induced phenomena in 2D classical spin models
O. Kapikranian, B. Berche, Yu. Holovatch
We make a short overview of the recent analytic and numerical studies of the classical two-dimensional XY and Heisenberg models at low temperatures. Special attention is being paid…