Physics – Condensed Matter – Superconductivity
Scientific paper
2007-08-27
J. Phys.:Condens. Matter 20, 395203 (2008)
Physics
Condensed Matter
Superconductivity
12 pages, 6 figures, to be published in J. Physics: Condensed Matter
Scientific paper
10.1088/0953-8984/20/39/395203
We investigate the coupling of an inhomogeneous electron system to phonons. The properties of an electronic system composed of a mixture of microscopic ordered and disordered islands are changed fundamentally by a phonon mode. In high-Tc cuprates, such a phase separation scenario is supported by recent STM and nuclear quadrupole resonance studies. We show that even a weak or moderate electron-phonon coupling can be sufficient to produce dramatic changes in the electronic state of the inhomogeneous electron gas. The spectral properties calculated in our approach provide a natural explanation of the low-energy nodal ARPES features and exhibit a novel non-Fermi-liquid state stabilized through electron-phonon coupling.
Kopp Thilo
Pavlenko Natalia
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