Selforganized 3-band structure of the doped fermionic Ising spin glass

TL;DR

This paper investigates the fermionic Ising spin glass model, revealing a selforganized three-band electronic structure in the ordered phase, with filling-dependent features and replica symmetry breaking effects influencing the density of states.

Contribution

It introduces a detailed analysis of the three-band structure and replica symmetry breaking effects in the doped fermionic Ising spin glass across all temperatures.

Findings

A selforganized 3-band structure appears in the ordered phase.

Deviation from half filling creates a nonmagnetic central band.

Replica symmetry breaking affects the density of states and fermion filling at low temperatures.

Abstract

The fermionic Ising spin glass is analyzed for arbitrary filling and for all temperatures. A selforganized 3-band structure of the model is obtained in the magnetically ordered phase. Deviation from half filling generates a central nonmagnetic band, which becomes sharply separated at T=0 by (pseudo)gaps from upper and lower magnetic bands. Replica symmetry breaking effects are derived for several observables and correlations. They determine the shape of the 3-band DoS, and, for given chemical potential, influence the fermion filling strongly in the low temperature regime.