Momentum distribution of occupation numbers in FeAs-based superconductors
Abstract
The momentum distribution of charge carriers in two-dimensional FeAs-clusters modeling iron-based superconductors was calculated within the limits of the two-orbital model. The calculation was implemented by use of quantum world-line Monte Carlo algorithm. Matsubara Green's function was calculated for clusters with sizes up to 10x10 FeAs-cells. Profiles of the distributions are presented for the entire Brillouin zone. The data indicate the presence of a jump near the Fermi level, which is the evidence of the Fermi-type distribution. The influence on the momentum distribution of the value of the interaction parameter is discussed.
- Publication:
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Journal of Physics Conference Series
- Pub Date:
- August 2016
- DOI:
- 10.1088/1742-6596/738/1/012020
- Bibcode:
- 2016JPhCS.738a2020K