Itinerant fermions on dilute frustrated Ising lattices (original) (raw)

The European Physical Journal B, 2021

Abstract

We consider itinerant spinless fermions as moving defects in a dilute two-dimensional frustrated Ising system where they occupy site vacancies. Fermions interact via local spin fluctuations, and we analyze coupled self-consistent mean-field equations of the Green functions after expressing the spin and fermion operators in terms of Grassmann variables. The specific heat and effective mass are analyzed with the solutions satisfying the symmetry imposed by the coupling layout. At low temperature, we find that these solutions induce stripes along the lines of couplings with the same sign, and that a low fermion density yields a small effective mass

Jean-Yves P Fortin hasn't uploaded this paper.

Let Jean-Yves know you want this paper to be uploaded.

Ask for this paper to be uploaded.