Physics – Condensed Matter – Superconductivity
Scientific paper
1999-09-15
Physics
Condensed Matter
Superconductivity
to be published in Phys. Rev. B (November 1, 1999)
Scientific paper
10.1103/PhysRevB.60.14888
We calculate the c-axis infrared conductivity $\sigma_c(\omega)$ in underdoped cuprate superconductors for spinfluctuation exchange scattering within the CuO$_2$-planes including a phenomenological d-wave pseudogap of amplitude $E_g$. For temperatures decreasing below a temperature $T^* \sim E_g/2$, a gap for $\omega < 2E_g$ develops in $\sigma_c(\omega)$ in the incoherent (diffuse) transmission limit. The resistivity shows 'semiconducting' behavior, i.e. it increases for low temperatures above the constant behavior for $E_g=0$. We find that the pseudogap structure in the in-plane optical conductivity is about twice as big as in the interplane conductivity $\sigma_c(\omega)$, in qualitative agreement with experiment. This is a consequence of the fact that the spinfluctuation exchange interaction is suppressed at low frequencies as a result of the opening of the pseudogap. While the c-axis conductivity in the underdoped regime is described best by incoherent transmission, in the overdoped regime coherent conductance gives a better description.
Dahm Thomas
Manske Dirk
Tewordt L.
No associations
LandOfFree
Effect of a Normal-State Pseudogap on Optical Conductivity in Underdoped Cuprate 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 Effect of a Normal-State Pseudogap on Optical Conductivity in Underdoped Cuprate Superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effect of a Normal-State Pseudogap on Optical Conductivity in Underdoped Cuprate Superconductors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-197439