Berlin 2008 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 33: Symposium: High-Temperature Superconductivity

TT 33.6: Vortrag

Donnerstag, 28. Februar 2008, 16:10–16:35, H 0104

d-wave stripes in cuprates: Valence bond order coexisting with nodal quasiparticles — •Matthias Vojta — Institut für Theoretische Physik, Universität Köln, 50937 Köln, Germany

We point out that unidirectional bond-centered charge-density-wave states in cuprates involve electronic order in both s- and d-wave channels, with non-local Coulomb repulsion suppressing the s-wave component. The resulting bond-charge-density wave, coexisting with superconductivity, is compatible with momentum-space features seen in recent photoemission and tunneling data and as well as in neutron-scattering measurements, once long-range order is destroyed by slow fluctuations or glassy disorder.