2 papers
cond-mat.str-el2000
Recent progress in the truncated Lanczos method : application to hole-doped spin ladders
O. Chiappa, S. Capponi, D. Poilblanc
The truncated Lanczos method using a variational scheme based on Hilbert space reduction as well as a local basis change is re-examined. The energy is extrapolated as a power law f…
cond-mat2000
Evolution of the Spin Gap Upon Doping a 2-Leg Ladder
D. Poilblanc, O. Chiappa, J. Riera +2
The evolution of the spin gap of a 2-leg ladder upon doping depends upon the nature of the lowest triplet excitations in a ladder with two holes. Here we study this evolution using…