Electronic properties of disordered valence-bond stripes in cuprate superconductors
arXiv:0803.2038 · doi:10.1103/PhysRevB.78.144508
Abstract
We calculate electronic single-particle properties of short-range ordered stripe states, using Monte-Carlo simulations of collective charge-density wave (CDW) order parameters coupled to fermions on a 2d square lattice. For superconducting bond-centered stripes with a d-wave form factor, we find a valence-bond "glass" which coexists with low-energy quasiparticles featuring interference phenomena, in agreement with recent scanning-tunneling-microscopy (STM) measurements on underdoped BSCCO and CaNaCuOCl. Together with earlier work, our calculations provide a link between CDW features seen in STM and those in magnetic neutron scattering.
6 pages, 5 figs; (v2) slightly extended version, as published
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