Тип публикации: статья из журнала
Год издания: 2024
Идентификатор DOI: 10.1088/1361-648x/ad0351
Аннотация: <jats:title>Abstract</jats:title> <jats:p>We propose a simple, yet feasible, model for quantum transport of fermionic carriers across tight-binding chain connecting two reservoirs maintained at arbitrary temperatures and chemical potentials. The model allows for elementary derivation of the master equation for the reduced single paПоказать полностьюrticle density matrix (SPDM) in a closed form in both Markov and Born approximations. In the Markov approximation the master equation is solved analytically, whereas in the Born approximation the problem is reduced to an algebraic equation for the SPDM in the Redfield form. The non-Markovian equation is shown to lead to resonant transport similar to Landauer’s conductance. It is shown that in the deep non-Markovian regime the transport current can be matched with that obtained by the non-equilibrium Green’s function method.</jats:p>
Журнал: Journal of Physics: Condensed Matter
Выпуск журнала: Т. 36, № 4
Номера страниц: 045301
ISSN журнала: 09538984
Издатель: Institute of Physics and IOP Publishing Limited