TY - JOUR
T1 - Hidden fermi liquid, scattering rate saturation, and nernst effect
T2 - A dynamical mean-field theory perspective
AU - Xu, Wenhu
AU - Haule, Kristjan
AU - Kotliar, Gabriel
PY - 2013/7/17
Y1 - 2013/7/17
N2 - We investigate the transport properties of a correlated metal within dynamical mean-field theory. Canonical Fermi liquid behavior emerges only below a very low temperature scale TFL. Surprisingly the quasiparticle scattering rate follows a quadratic temperature dependence up to much higher temperatures and crosses over to saturated behavior around a temperature scale Tsat. We identify these quasiparticles as constituents of the hidden Fermi liquid. The non-Fermi-liquid transport above TFL, in particular the linear-in-T resistivity, is shown to be a result of a strongly temperature dependent band dispersion. We derive simple expressions for the resistivity, Hall angle, thermoelectric power and Nernst coefficient in terms of a temperature dependent renormalized band structure and the quasiparticle scattering rate. We discuss possible tests of the dynamical mean-field theory picture of transport using ac measurements.
AB - We investigate the transport properties of a correlated metal within dynamical mean-field theory. Canonical Fermi liquid behavior emerges only below a very low temperature scale TFL. Surprisingly the quasiparticle scattering rate follows a quadratic temperature dependence up to much higher temperatures and crosses over to saturated behavior around a temperature scale Tsat. We identify these quasiparticles as constituents of the hidden Fermi liquid. The non-Fermi-liquid transport above TFL, in particular the linear-in-T resistivity, is shown to be a result of a strongly temperature dependent band dispersion. We derive simple expressions for the resistivity, Hall angle, thermoelectric power and Nernst coefficient in terms of a temperature dependent renormalized band structure and the quasiparticle scattering rate. We discuss possible tests of the dynamical mean-field theory picture of transport using ac measurements.
UR - http://www.scopus.com/inward/record.url?scp=84880563659&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84880563659&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.111.036401
DO - 10.1103/PhysRevLett.111.036401
M3 - Article
AN - SCOPUS:84880563659
SN - 0031-9007
VL - 111
JO - Physical review letters
JF - Physical review letters
IS - 3
M1 - 036401
ER -