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Journal of Physical Studies 13(1), Article 4701 [4 pages] (2009)
DOI: https://doi.org/10.30970/jps.13.4701 RELATIONSHIPS BETWEEN ELECTRON BAND FILLING AND TYPE OF CHARGE AND MAGNETIC ORDERR. Lemański, J. Wrzodak
Institute of Low Temperature and Structure Research,
Polish Academy of Sciences, |
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Charge and spin orderings are studied on the square lattice within the generalized Falicov-Kimball model with Hund coupling between localized and itinerant electrons. Using the restricted phase diagram method (RPDM) we detected in diluted magnets a few simple rules of formation of the unique family of ground state periodic phases that are stable both for large and intermediate values of coupling parameters. It appears, that for this group of phases only non-axial stripes composed of ferromagnetic, or sporadically also antiferromagnetic chains, oriented either along one of the two main diagonal directions or along another direction that is non-parallel to the main crystal axis are formed. The antiferromagnetic order is robust in these phases but occasionally ferromagnetic phases are also found.
PACS number(s): 71.10.Fd, 71.28.+d