Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2007-05-26
Phys. Rev. B 76, 165118 (2007) (14 pages)
Physics
Condensed Matter
Strongly Correlated Electrons
16 pages, 10 figures, color version available at http://physics.ucsc.edu/~peterson/mrpeterson-condmat-NCO.pdf. V.2 has fixed
Scientific paper
10.1103/PhysRevB.76.165118
Thermal response functions of strongly correlated electron systems are of appreciable interest to the larger scientific community both theoretically and technologically. Here we focus on the infinitely correlated t-J model on a geometrically frustrated two-dimensional triangular lattice. Using exact diagonalization on a finite sized system we calculate the dynamical thermal response functions in order to determine the thermopower, Lorenz number, and dimensionless figure of merit. The dynamical thermal response functions is compared to the infinite frequency limit and shown to be very weak functions of frequency, hence, establishing the validity of the high frequency formalism recently proposed by Shastry for the thermopower, Lorenz number, and the dimensionless figure of merit. Further, the thermopower is demonstrated to have a low to mid temperature enhancement when the sign of the hopping parameter $t$ is switched from positive to negative for the geometrically frustrated lattice considered.
Haerter Jan O.
Peterson Michael R.
Shastry Sriram B.
No associations
LandOfFree
Thermoelectric effects in a strongly correlated model for Na$_x$CoO$_2$ 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 Thermoelectric effects in a strongly correlated model for Na$_x$CoO$_2$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermoelectric effects in a strongly correlated model for Na$_x$CoO$_2$ will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-582158