Physics – Condensed Matter – Superconductivity
Scientific paper
2011-05-04
Reports on Progress in Physics 74, 066501/1-43 (2011)
Physics
Condensed Matter
Superconductivity
71 pages, 52 figures
Scientific paper
We review a number of experimental techniques that are beginning to reveal fine details of the bosonic spectrum \alpha^2F(\Omega) that dominates the interaction between the quasiparticles in high temperature superconductors. Angle-resolved photo emission (ARPES) shows kinks in electronic dispersion curves at characteristic energies that agree with similar structures in the optical conductivity and tunnelling spectra. Each technique has its advantages. ARPES is momentum resolved and offers independent measurements of the real and imaginary part of the contribution of the bosons to the self energy of the quasiparticles. The optical conductivity can be used on a larger variety of materials and with the use of maximum entropy techniques reveals rich details of the spectra including their evolution with temperature and doping. Scanning tunnelling spectroscopy offers spacial resolution on the unit cell level. We find that together the various spectroscopies, including recent Raman results, are pointing to a unified picture of a broad spectrum of bosonic excitations at high temperature which evolves, as the temperature is lowered into a peak in the 30 to 60 meV region and a featureless high frequency background in most of the materials studied. This behaviour is consistent with the spectrum of spin fluctuations as measured by magnetic neutron scattering. However, there is evidence for a phonon contribution to the bosonic spectrum as well.
Carbotte Jules P.
Hwang Jungseek
Timusk Thomas
No associations
LandOfFree
Bosons in high temperature superconductors: an experimental survey 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 Bosons in high temperature superconductors: an experimental survey, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bosons in high temperature superconductors: an experimental survey will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-688850