Files in this item
Coherent backaction between spins and an electronic bath : non-Markovian dynamics and low-temperature quantum thermodynamic electron cooling
Item metadata
dc.contributor.author | Matern, Stephanie | |
dc.contributor.author | Loss, Daniel | |
dc.contributor.author | Klinovaja, Jelena | |
dc.contributor.author | Braunecker, Bernd | |
dc.date.accessioned | 2019-10-18T09:30:04Z | |
dc.date.available | 2019-10-18T09:30:04Z | |
dc.date.issued | 2019-10-16 | |
dc.identifier | 261446051 | |
dc.identifier | 689a827d-abfe-44a9-90d5-de7251ba6bc1 | |
dc.identifier | 85074389160 | |
dc.identifier | 000490466200001 | |
dc.identifier.citation | Matern , S , Loss , D , Klinovaja , J & Braunecker , B 2019 , ' Coherent backaction between spins and an electronic bath : non-Markovian dynamics and low-temperature quantum thermodynamic electron cooling ' , Physical Review. B, Condensed matter and materials physics , vol. 100 , no. 13 , 134308 . https://doi.org/10.1103/PhysRevB.100.134308 | en |
dc.identifier.issn | 1098-0121 | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/1905.11422v1 | |
dc.identifier.other | ORCID: /0000-0002-7077-8825/work/63380975 | |
dc.identifier.uri | https://hdl.handle.net/10023/18701 | |
dc.description | S.M. acknowledges the support by the EPSRC under Grant No. EP/L015110/1. D.L. and J.K. acknowledge the support by the Swiss National Science Foundation and NCCR QSIT. | en |
dc.description.abstract | We provide a versatile analytical framework for calculating the dynamics of a spin system in contact with a fermionic bath beyond the Markov approximation. The approach is based on a second-order expansion of the Nakajima-Zwanzig master equation but systematically includes all quantum coherent memory effects leading to non-Markovian dynamics. Our results describe, for the free induction decay, the full time range from the non-Markovian dynamics at short times, to the well-known exponential thermal decay at long times. We provide full analytic results for the entire time range using a bath of itinerant electrons as an archetype for universal quantum fluctuations. Furthermore, we propose a quantum thermodynamic scheme to employ the temperature insensitivity of the non-Markovian decay to transport heat out of the electron system and thus, by repeated reinitialization of a cluster of spins, to efficiently cool the electrons at very low temperatures. | |
dc.format.extent | 18 | |
dc.format.extent | 995863 | |
dc.language.iso | eng | |
dc.relation.ispartof | Physical Review. B, Condensed matter and materials physics | en |
dc.subject | QC Physics | en |
dc.subject | T-NDAS | en |
dc.subject | BDC | en |
dc.subject | R2C | en |
dc.subject.lcc | QC | en |
dc.title | Coherent backaction between spins and an electronic bath : non-Markovian dynamics and low-temperature quantum thermodynamic electron cooling | en |
dc.type | Journal article | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. Centre for Designer Quantum Materials | en |
dc.contributor.institution | University of St Andrews. Condensed Matter Physics | en |
dc.identifier.doi | 10.1103/PhysRevB.100.134308 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | EP/L015110/1 | en |
This item appears in the following Collection(s)
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.