Based on positive semidefinite operator properties, an exact ground state solution is deduced for a 2D Hubbard model with periodic boundary conditions on small samples. The obtained ferromagnetic behavior is used as a possible explanation of the ferromagnetism occurring in nano-samples made of non-magnetic but metallic materials.
|Journal||IOP Conference Series: Materials Science and Engineering|
|Publication status||Published - Dec 1 2013|
|Event||2nd International Conference on Competitive Materials and Technological Processes, IC-CMTP 2012 - Miskolc-Lillafured, Hungary|
Duration: Oct 8 2012 → Oct 12 2012
ASJC Scopus subject areas
- Materials Science(all)