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  Energy Current Rectification and Mobility Edges

Balachandran, V., Clark, S. R., Goold, J., & Poletti, D. (2019). Energy Current Rectification and Mobility Edges. Physical Review Letters, 123(2): 020603. doi:10.1103/PhysRevLett.123.020603.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0004-68E7-3 Version Permalink: https://hdl.handle.net/21.11116/0000-0004-B7F5-9
Genre: Journal Article

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PhysRevLett.123.020603.pdf (Publisher version), 421KB
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https://dx.doi.org/10.1103/PhysRevLett.123.020603 (Publisher version)
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https://arxiv.org/abs/1809.10640 (Preprint)
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 Creators:
Balachandran, V.1, Author
Clark, S. R.2, 3, 4, 5, Author           
Goold, J.6, Author
Poletti, D.1, Author
Affiliations:
1Science and Math Cluster and EPD Pillar, Singapore University of Technology and Design, ou_persistent22              
2Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
3H.H. Wills Physics Laboratory, University of Bristol, ou_persistent22              
4Department of Physics, University of Bath, ou_persistent22              
5University of Hamburg CFEL, ou_persistent22              
6School of Physics, Trinity College Dublin, ou_persistent22              

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 Abstract: We investigate how the presence of a single-particle mobility edge in a system can generate strong energy current rectification. Specifically, we study a quadratic bosonic chain subject to a quasiperiodic potential and coupled at its boundaries to spin baths of differing temperature. We find that rectification increases by orders of magnitude depending on the spatial position in the chain of localized eigenstates above the mobility edge. The largest enhancements occur when the coupling of one bath to the system is dominated by a localized eigenstate, while the other bath couples to numerous delocalized eigenstates. By tuning the parameters of the quasiperiodic potential it is thus possible to vary the amplitude, and even invert the direction, of the rectification.

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Language(s): eng - English
 Dates: 2019-07-192018-10-032019-03-042019-07-102019-07-12
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevLett.123.020603
arXiv: 1809.10640
 Degree: -

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Project name : D. P. and V. B. are grateful to G. Benenti for insightful discussions. D. P. and V. B. acknowledge support from the Singapore Ministry of Education AcRF MOE Tier-II (project MOE2016-T2-1-065, WBS R-144-000-350-112). S. R. C. gratefully acknowledges support from the UK’s Engineering and Physical Sciences Research Council (EPSRC) under Grant No. EP/P025110/1. J. G. is supported by an SFI-Royal Society University Research Fellowship. J. G. acknowledges that this project has received funding from the European Research Council (ERC) under the European Unions Horizon 2020 research and innovation programme (Grant Agreement No. 758403). The computational work for this Letter was partially performed on resources of the National Supercomputing Centre, Singapore [41].
Grant ID : 758403
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)

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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 123 (2) Sequence Number: 020603 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1