English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Thermoelectric transport in nanoscale conductors is analyzed in terms of theresponse of the system to a thermo-mechanical field, first introduced byLuttinger, which couples to the electronic energy density. While in thisapproach the temperature remains spatially uniform, we show that a spatiallyvarying thermo-mechanical field effectively simulates a temperature gradientacross the system and allows us to calculate the electric and thermal currentsthat flow due to the thermo-mechanical field. In particular, we show that, inthe long-time limit, the currents thus calculated reduce to those that oneobtains from the Landauer-B\"uttiker formula, suitably generalized to allow fordifferent temperatures in the reservoirs, if the thermo-mechanical field isapplied to prepare the system, and subsequently turned off at ${t=0}$.Alternatively, we can drive the system out of equilibrium by switching thethermo-mechanical field after the initial preparation. We compare these twoscenarios, employing a model noninteracting Hamiltonian, in the linear regime,in which they coincide, and in the nonlinear regime in which they show markeddifferences. We also show how an operationally defined local effectivetemperature can be computed within this formalism.

Luttinger-field approach to thermoelectric transport in nanoscale conductors