180 citations · 450 across the 14 of their papers we have counts for
6 papers · 1 filter
Strongly correlated electrons on frustrated lattices
Peter Fulde, Frank Pollmann, Erich Runge
We give an overview of recent work on charge degrees of freedom of strongly correlated electrons on geometrically frustrated lattices. Special attention is paid to the checkerboard…
Fractionally charged excitations on frustrated lattices
E. Runge, F. Pollmann, P. Fulde
Systems of strongly correlated fermions on certain geometrically frustrated lattices at particular filling factors support excitations with fractional charges . We calcula…
Charge degrees in the quarter-filled checkerboard lattice
F. Pollmann, J. J. Betouras, E. Runge +1
For a systematic study of charge degrees of freedom in lattices with geometric frustration, we consider spinless fermions on the checkerboard lattice with nearest-neighbor hopping…
Classical correlations of defects in lattices with geometrical frustration in the motion of a particle
F. Pollmann, J. J. Betouras, E. Runge
We map certain highly correlated electron systems on lattices with geometrical frustration in the motion of added particles or holes to the spatial defect-defect correlations of di…
Spectral functions and optical conductivity of spinless fermions on a checkerboard lattice
F. Pollmann, P. Fulde, E. Runge
We study the dynamical properties of spinless fermions on the checkerboard lattice. Our main interest is the limit of large nearest-neighbor repulsion as compared with hopping…
Approximative treatment of 5f-systems with partial localization due to intra-atomic correlations
E. Runge, P. Fulde, D. V. Efremov +2
Increasing experimental and theoretical evidence points towards a dual nature of the 5 electrons in actinide-based strongly correlated metallic compounds, with some 5 electro…