Abstract
We investigate the manifestation of stripes in the in-plane resistivity anisotropy in untwinned single crystals of ( ) and ( ). It is found that both systems show strongly temperature-dependent in-plane anisotropy in the lightly hole-doped region and that the anisotropy in grows with decreasing below despite the decreasing orthorhombicity, which gives most direct evidence that electrons self-organize into a macroscopically anisotropic state. The transport is found to be easier along the direction of the spin stripes already reported, demonstrating that the stripes are intrinsically conducting in cuprates.
- Received 31 July 2001
DOI:https://doi.org/10.1103/PhysRevLett.88.137005
©2002 American Physical Society