Energy Current Rectification and Mobility Edges
Citation:
Balachandran, V., Clark, S.R., Goold, J., Poletti, D., Energy Current Rectification and Mobility Edges, Physical Review Letters, 2019 Jul 12;123(2):020603Download Item:
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.
Sponsor
Grant Number
Science Foundation Ireland
Author's Homepage:
http://people.tcd.ie/gooldjDescription:
PUBLISHED
Author: Goold, John
Sponsor:
Science Foundation IrelandType of material:
Journal ArticleCollections
Series/Report no:
Physical Review Letters;123;
2;
Availability:
Full text availableDOI:
http://dx.doi.org/110.1103/PhysRevLett.123.020603Metadata
Show full item recordLicences: