23 citations · 51 across the 6 of their papers we have counts for
6 papers · 1 filter
Low-temperature evolution of the spectral weight of a spin-up carrier moving in a ferromagnetic background
Mirko M. Möller, Mona Berciu
We derive the lowest-temperature correction to the self-energy of a spin-up particle injected in a ferromagnetic background. The background is modeled with both Heisenberg and Isin…
Local environment effects on a charge carrier injected into an Ising chain
Mirko M. Möller, Mona Berciu
We present numerically exact results for the spectral function of a single charge carrier that is injected into an Ising chain at finite temperature . Both ferromagnetic and ant…
On the equivalence of models with similar low-energy quasiparticles
Mirko M. Möller, Mona Berciu
We use a Metropolis algorithm to calculate the finite temperature spectral weight of three related models that have identical quasiparticles at , if the exchange favors the ap…
Discontinuous polaron transition in a two-band model
Mirko M. Möller, Mona Berciu
We present exact diagonalization and momentum average approximation (MA) results for the single polaron properties of a one-dimensional two-band model with phonon-modulated hopping…
The role of the lattice structure in determining the magnon-mediated interactions between charge carriers doped into a magnetically ordered background
Mirko Moeller, George A. Sawatzky, Mona Berciu
We use two recently proposed methods to calculate exactly the spectrum of two spin- charge carriers moving in a ferromagnetic background, at zero temperature, for three…
Magnon-mediated interactions between fermions depend strongly on the lattice structure
Mirko Moeller, George A. Sawatzky, Mona Berciu
We propose two new methods to calculate exactly the spectrum of two spin- charge carriers moving in a ferromagnetic background, at zero temperature. We find that if the…