49 citations · 51 across the 2 of their papers we have counts for
5 papers
Non-analytic behavior of 2D itinerant ferromagnets
Dmitri V. Efremov, Joseph J. Betouras, Andrey V. Chubukov
We consider an ordered ferromagnet in the vicinity of a T=0 transition into a paramagnet. We show that the free energy and the transverse and longitudinal static susceptibilities c…
Meta-nematic, smectic and crystalline phases of dipolar fermions in an optical lattice
J. Quintanilla, S. T. Carr, J. J. Betouras
It has been suggested that some strongly correlated matter might be understood qualitatively in terms of liquid crystalline phases intervening between the Fermi gas and the Wigner…
Multiferroicity induced by dislocated spin-density waves
Joseph J. Betouras, Gianluca Giovannetti, Jeroen van den Brink
We uncover a new pathway towards multiferroicity, showing how magnetism can drive ferroelectricity without relying on inversion symmetry breaking of the magnetic ordering. Our free…
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…
Correlated Fermions on a Checkerboard Lattice
F. Pollmann, J. J. Betouras, K. Shtengel +1
A model of strongly correlated spinless fermions hopping on a checkerboard lattice is mapped onto a quantum fully-packed loop model. We identify a large number of fluctuationless s…