1202.0202 (N. J. Robinson et al.)

Finite wave vector pairing in doped two-leg ladders    [PDF]

N. J. Robinson, F. H. L. Essler, E. Jeckelmann, A. M. Tsvelik

We consider the effects of Umklapp processes in doped two-leg fermionic
ladders. These may emerge either at special band fillings or as a result of the
presence of external periodic potentials. We show that such Umklapp processes
can lead to profound changes of physical properties and in particular stabilize
pair-density wave phases.

View original: http://arxiv.org/abs/1202.0202