Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2006-03-24
Phys. Rev. B 74, 155115 (2006)
Physics
Condensed Matter
Strongly Correlated Electrons
11 pages, 9 figures
Scientific paper
10.1103/PhysRevB.74.155115
We examine the temperature dependence of the optical sum rule in the normal state due to interactions. To be concrete we adopt a weak coupling approach which uses an electron-boson exchange model to describe inelastic scattering of the electrons with a boson, in the Migdal approximation. While a number of recent works attribute the temperature dependence in the normal state to that which arises in a Sommerfeld expansion, we show that in a wide parameter regime this contribution can be quite small. Instead, most of the temperature dependence arises from the zeroth order term in the `expansion', through the temperature dependence of the spectral function, and the interaction parameters contained therein. For low boson frequencies this circumstance causes a linear T-dependence in the sum rule. We develop some analytical expressions and understanding of the temperature dependence.
Benfatto Lara
Carbotte Jules P.
Marsiglio Frank
No associations
LandOfFree
Temperature Dependence of the Conductivity Sum Rule in the Normal State due to Inelastic Scattering 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 Temperature Dependence of the Conductivity Sum Rule in the Normal State due to Inelastic Scattering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature Dependence of the Conductivity Sum Rule in the Normal State due to Inelastic Scattering will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-90816