Resonant electron-lattice cooling in graphene
Name
PhysRevB.97.245416.pdf
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370.15 KB
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Author(s)
Kong, Jian Feng
Levitov, Leonid
Halbertal, Dorri
Zeldov, Eli
Date Issued
June 2018
Journal
Physical Review B
Publisher
American Physical Society
Citation
Kong, Jian Feng et al. "Resonant electron-lattice cooling in graphene." Physical Review B 97, 24 (June 2018): 245416 © 2018 American Physical Society
Version
Final published version
Abstract
Controlling energy flows in solids through switchable electron-lattice cooling can grant access to a range of interesting and potentially useful energy transport phenomena. Here we discuss a tunable electron-lattice cooling mechanism arising in graphene due to phonon emission mediated by resonant scattering on defects in a crystal lattice, which displays an interesting analogy to the Purcell effect in optics. In that, the electron-phonon cooling rate is enhanced due to hot carrier trapping at resonant defects. Resonant dependence of this process on carrier energy translates into gate-tunable cooling rates, exhibiting strong enhancement of cooling that occurs when the carrier energy is aligned with the electron resonance of the defect.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevB.97.245416
