https://doi.org/10.1140/epjb/e2008-00113-2
Hubbard model and the origin of ferromagnetism
Department of Physics, Gakushuin University, Mejiro, Toshima-ku,
Tokyo 171-8588, Japan
Corresponding author: a hal.tasaki@gakushuin.ac.jp
Received:
13
September
2007
Revised:
12
February
2008
Published online:
19
March
2008
It is believed that strong ferromagnetic orders in some solids are generated by subtle interplay between quantum many-body effects and spin-independent Coulomb interactions between electrons. Here we describe our rigorous and constructive approach to ferromagnetism in the Hubbard model, which is a standard idealized model for strongly interacting electrons in a solid.
PACS: 71.10.-w – Theories and models of many-electron systems / 02.10.Yn – Matrix theory
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008