Mechanism of the reorientation of stripes in the cuprates

Using the mean field theory in the slave-boson approach we analyzed the electron correlation effects in the stripe phases. One finds that a finite next-nearest neighbor hopping $t^{\mathrm{\prime }}$ plays an important role in the low doping regime, where it controls the crossover from the filled diagonal to half-filled vertical/horizontal stripes at doping $x\simeq 1\mathrm{/}16$.