548 citations · 2.3k across the 23 of their papers we have counts for
9 papers · 1 filter
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…
Diagonal Ladders: A New Class of Models for Strongly Coupled Electron Systems
G. Sierra, M. A. Martin-Delgado, S. R. White +2
We introduce a class of models defined on ladders with a diagonal structure generated by plaquettes. The case corresponds to the necklace ladder and has remarkable pr…
Dimerization and Incommensurate Spiral Spin Correlations in the Zigzag Spin Chain: Analogies to the Kondo Lattice
Steven R. White, Ian Affleck
Using the density matrix renormalization group and a bosonization approach, we study a spin-1/2 antiferromagnetic Heisenberg chain with near-neighbor coupling and frustrating…
The ground state of the two-leg Hubbard ladder: a density--matrix renormalization group study
R. M. Noack, S. R. White, D. J. Scalapino
We present density-matrix renormalization group results for the ground state properties of two-leg Hubbard ladders. The half-filled Hubbard ladder is an insulating spin-gapped syst…
The Hubbard model with smooth boundary conditions
M. Vekic, S. R. White
We apply recently developed smooth boundary conditions to the quantum Monte Carlo simulation of the two-dimensional Hubbard model. At half-filling, where there is no sign problem,…
Equivalence of the antiferromagnetic Heisenberg ladder to a single chain
Steven R. White
I introduce two continuous transformations between the Heisenberg chain and the antiferromagnetic Heisenberg ladder. Both transformations couple diagonally situated {…