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5 papers · 2 filters
Influence of hopping selfenergy and quasiparticle degradation on the antiferromagnetic ordering in the bilayer honeycomb Hubbard model
Carsten Honerkamp
We study the Hubbard model on the AB-stacked bilayer honeycomb lattice with a repulsive onsite interaction U in second order perturbation theory and in self-consistent random phase…
Antiferromagnetism and competing charge instabilities of electrons in strained graphene from Coulomb interactions
David Sánchez de la Peña, Julian Lichtenstein, Carsten Honerkamp +1
We study the quantum many-body ground states of electrons on the half-filled honeycomb lattice with short- and long-ranged density-density interactions as a model for graphene. To…
Influence of phonon-assisted tunneling on the linear thermoelectric transport through molecular quantum dots
A. Khedri, V. Meden, T. A. Costi
We investigate the effect of vibrational degrees of freedom on the linear thermoelectric transport through a single-level quantum dot described by the spinless Anderson-Holstein im…
Exponential and power-law renormalization in phonon-assisted tunneling
A. Khedri, T. A. Costi, V. Meden
We investigate the spinless Anderson-Holstein model routinely employed to describe the basic physics of phonon-assisted tunneling in molecular devices. Our focus is on small to int…
Low temperature magnetic structure of CeRhIn by neutron diffraction on absorption-optimized samples
D M Fobes, E D Bauer, J D Thompson +5
Two aspects of the ambient pressure magnetic structure of heavy fermion material CeRhIn have remained under some debate since its discovery: whether the structure is indeed an…