46 citations · 94 across the 3 of their papers we have counts for
6 papers
Spinon deconfinement in doped frustrated quantum antiferromagnets
Didier Poilblanc, Andreas Laeuchli, Matthieu Mambrini +1
The confinement of a spinon liberated by doping two-dimensional frustrated quantum antiferromagnets with a non-magnetic impurity or a mobile hole is investigated. For a static vaca…
Enhanced pairing in doped quantum magnets with frustrating hole motion
Didier Poilblanc
Evidence for strong pairing at arbitrary small J/t is provided in a t-J model on the checkerboard lattice for the sign of hopping leading to frustration in hole motion. Destructive…
Spin-Charge Separation in Two-dimensional Frustrated Quantum Magnets
A. Laeuchli, D. Poilblanc
The dynamics of a mobile hole in two-dimensional frustrated quantum magnets is investigated by exact diagonalization techniques. Our results provide evidence for spin-charge separa…
Li Induced Spin and Charge Excitations in a Spin Ladder
Andreas Laeuchli, Didier Poilblanc, T. M. Rice +1
A lithium dopant in a cuprate spin ladder acts as a vacant (non-magnetic) site accompanied by an extra hole bound by a Coulomb potential. We find that, although the undoped ladder…
Interaction between impurities and solitons in quasi one-dimensional spin-Peierls systems
D. Augier, P. Hansen, D. Poilblanc +2
The role of the spin-phonon coupling in spin-Peierls chains doped with spin-0 or spin-1 impurities is investigated by various numerical methods such as exact diagonalization, quant…
Persistent Currents in Interacting Systems: Role of the Spin
Georges Bouzerar, Didier Poilblanc
Persistent currents flowing through disordered mesoscopic rings threaded by a magnetic flux are investigated. Models of fermions with on-site interactions (Hubbard model) or models…