| We investigate the formation of stripes in six-leg Hubbard ladders doped away from half filling using the density-matrix renormalization group method. A parallelized code allows us to keep enough density-matrix eigenstates and to study sufficiently large systems to extrapolate the stripe amplitude to the limits of vanishing DMRG truncation error and infinitely long ladders. Our work gives strong evidence for the existence of a long-range ordered stripe phase above a critical coupling U/t in Hubbard ladders.
[1] G. Hager et al., Phys. Rev. B 71, 075108 (2005)
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