Is the dispersion anomaly of the electron spectrum induced by the charge-density-wave in high-T_c superconductors?

2006/12/16 by T. Zhou, Zhou, T., Z. D. Wang +1
Physics and Astronomy · #FOS: Physical sciences #Superconductivity (cond-mat.supr-con) #cond-mat.supr-con

paper · pdf · doi:10.48550/arxiv.cond-mat/0612424

arxiv created 2006/12/16 · arxiv updated 2009/12/01

Abstract

We propose that the presence of a rotationally symmetric charge density wave (CDW) with the modulation of 4-lattice constant in high-T_c superconductors is essentially responsible for an anomalous quasiparticle dispersion revealed recently by angle-resolved photoemission spectroscopy (ARPES) experiments. We elaborate clearly that the nodal quasiparticle is well-defined at low energies, while the dispersion breaks up at the energy E₁ and reappears at the energy E₂. Our results are in good agreement with both the ARPES and scanning tunneling microscopy experiments.

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