Long-range orbital order in a degenerate-orbital Hubbard model: absence in low-dimensions

Details Long-range orbital order in a degenerate-orbital Hubbard model: absence in low-dimensions Long-range orbital order in a degenerate-orbital Hubbard model: absence in low-dimensions

Jul 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007njph....9..238n&link_type=abstract

New Journal of Physics, Volume 9, Issue 7, pp. 238 (2007).

Physics

1

Scientific paper

We investigate the possibility of long range orbital order in low- dimensional systems. The study is performed within a two-orbital Hubbard model by means of the Bogoliubov's inequality. We show that, in one- and two-dimensions, and when a narrow conduction band is concerned, this model does not exhibit orbital order at any filling and any finite temperature.

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