Dynamical charge and spin density wave scattering in cuprate superconductor

Details Dynamical charge and spin density wave scattering in cuprate superconductor Dynamical charge and spin density wave scattering in cuprate superconductor

2010-11-09

arxiv.org/abs/1011.2396v1

Physics

Condensed Matter

Superconductivity

27 pages, 13 figures, to appear in New J. Phys

Scientific paper

We show that a variety of spectral features in high-T_c cuprates can be understood from the coupling of charge carriers to some kind of dynamical order which we exemplify in terms of fluctuating charge and spin density waves. Two theoretical models are investigated which capture different aspects of such dynamical scattering. The first approach leaves the ground state in the disordered phase but couples the electrons to bosonic degrees of freedom, corresponding to the quasi singular scattering associated with the closeness to an ordered phase. The second, more phenomological approach starts from the construction of a frequency dependent order parameter which vanishes for small energies. Both theories capture scanning tunneling microscopy and angle-resoved photoemission experiments which suggest the protection of quasiparticles close to the Fermi energy but the manifestation of long-range order at higher frequencies.

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