dc.contributor.author | Tuovinen, Riku | |
dc.contributor.author | Säkkinen, Niko | |
dc.contributor.author | Karlsson, Daniel | |
dc.contributor.author | Stefanucci, Gianluca | |
dc.contributor.author | van Leeuwen, Robert | |
dc.date.accessioned | 2016-07-12T10:42:28Z | |
dc.date.available | 2016-07-12T10:42:28Z | |
dc.date.issued | 2016 | |
dc.identifier.citation | Tuovinen, R., Säkkinen, N., Karlsson, D., Stefanucci, G., & van Leeuwen, R. (2016). Phononic heat transport in the transient regime: An analytic solution. <i>Physical Review B</i>, <i>93</i>(21), Article 214301. <a href="https://doi.org/10.1103/PhysRevB.93.214301" target="_blank">https://doi.org/10.1103/PhysRevB.93.214301</a> | |
dc.identifier.other | CONVID_26113220 | |
dc.identifier.other | TUTKAID_70633 | |
dc.identifier.uri | https://jyx.jyu.fi/handle/123456789/50803 | |
dc.description.abstract | We investigate the time-resolved quantum transport properties of phonons in arbitrary harmonic systems
connected to phonon baths at different temperatures. We obtain a closed analytic expression of the time-dependent
one-particle reduced density matrix by explicitly solving the equations of motion for the nonequilibrium Green’s
function. This is achieved through a well-controlled approximation of the frequency-dependent bath self-energy.
Our result allows for exploring transient oscillations and relaxation times of local heat currents, and correctly
reduces to an earlier known result in the steady-state limit. We apply the formalism to atomic chains, and
benchmark the validity of the approximation against full numerical solutions of the bosonic Kadanoff-Baym
equations for the Green’s function. We find good agreement between the analytic and numerical solutions for
weak contacts and baths with a wide energy dispersion. We further analyze relaxation times from low to high
temperature gradients. | |
dc.language.iso | eng | |
dc.publisher | American Physical Society | |
dc.relation.ispartofseries | Physical Review B | |
dc.subject.other | quantum transport | |
dc.subject.other | heat transport | |
dc.title | Phononic heat transport in the transient regime: An analytic solution | |
dc.type | article | |
dc.identifier.urn | URN:NBN:fi:jyu-201607123576 | |
dc.contributor.laitos | Fysiikan laitos | fi |
dc.contributor.laitos | Department of Physics | en |
dc.contributor.oppiaine | Nanoscience Center | fi |
dc.contributor.oppiaine | Nanoscience Center | en |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | |
dc.date.updated | 2016-07-12T09:15:11Z | |
dc.type.coar | http://purl.org/coar/resource_type/c_2df8fbb1 | |
dc.description.reviewstatus | peerReviewed | |
dc.relation.issn | 1098-0121 | |
dc.relation.numberinseries | 21 | |
dc.relation.volume | 93 | |
dc.type.version | publishedVersion | |
dc.rights.copyright | © 2016 American Physical Society. Published in this repository with the kind permission of the publisher. | |
dc.rights.accesslevel | openAccess | fi |
dc.relation.grantnumber | 267839 | |
dc.subject.yso | fononit | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p28089 | |
dc.relation.doi | 10.1103/PhysRevB.93.214301 | |
dc.relation.funder | Suomen Akatemia | fi |
dc.relation.funder | Academy of Finland | en |
jyx.fundingprogram | Akatemiahanke, SA | fi |
jyx.fundingprogram | Academy Project, AoF | en |
jyx.fundinginformation | We thank the Vilho, Yrjo and Kalle V ¨ ais ¨ al¨ a Foundation, the Academy of Finland (Grant No. 267839), MIUR FIRB Grant No. RBFR12SW0, and EC funding through the RISE Co- ExAN (GA644076) for financial support. We further wish to acknowledge CSC–IT Center for Science, Finland, for computational resources. | |
dc.type.okm | A1 | |