Staggered orbital currents in the half-filled two-leg ladder
John Ove Fjærestad, John Bradley Marston
Using Abelian bosonization with a careful treatment of the Klein factors, we show that a certain phase of the half-filled two-leg ladder, previously identified as having spin-Peierls order, instead exhibits staggered orbital currents with no dimerization.
arXiv:cond-mat/0107094•Physical review. B, Condensed matter•Mar 13, 2002•49 citations