Topological Theory of Electron-Phonon Interactions in High Temperature Superconductors

Details Topological Theory of Electron-Phonon Interactions in High Temperature Superconductors Topological Theory of Electron-Phonon Interactions in High Temperature Superconductors

2004-08-02

arxiv.org/abs/cond-mat/0408040v1

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1103/PhysRevB.71.184505

There are large isotope effects in the phonon kinks observed in photoemission spectra (ARPES) of optimally doped cuprate high temperature superconductors (HTSC), but they are quite different (Gweon et al. 2004) from those expected for a nearly free electron metal with strong electron-phonon interactions (Tang et al. 2003). These differences, together with many other anomalies in infrared spectra, seem to suggest that other particles (such as magnons) must be contributing to HTSC. Here we use topological (non-Hamiltonian) methods to discuss the data, emphasizing nanoscale phase separation and the importance of a narrow band of quantum percolative states near the Fermi energy that is spatially pinned to a self-organized filamentary dopant array. Topological discrete, noncontinuum, nonperturbative methods have previously explained the form of HTSC phase diagrams without involving detailed microscopic assumptions, and they are especially useful in the presence of strong nanoscale disorder. These methods also explain the ``miracle'' of an ideal nearly free electron phonon kink in sharply defined nodal quasiparticle states in LSCO at the metal-insulator transition. Finally the universality of the kink energy and Fermi velocity in different cuprates is the result of the marginally elastic nature of these materials, and specifically the isostatic character of the CuO2 planes.

Affiliated with

Also associated with

No associations

Rating

Topological Theory of Electron-Phonon Interactions in High Temperature Superconductors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Topological Theory of Electron-Phonon Interactions in High Temperature Superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Topological Theory of Electron-Phonon Interactions in High Temperature Superconductors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-299447