期刊
PHYSICAL REVIEW LETTERS
卷 111, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.036401
关键词
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资金
- NSF [DMR-0906943, DMR-0746395]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0746395] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1308141] Funding Source: National Science Foundation
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 T-FL. 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 T-sat. We identify these quasiparticles as constituents of the hidden Fermi liquid. The non-Fermi-liquid transport above T-FL, 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.
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