Disorder-Assisted Electron-Phonon Scattering and Cooling Pathways in Graphene
Name
Song-2012-Disorder-assisted electron-phonon scattering.pdf
Size
383.19 KB
Format
Adobe PDF
Checksum (MD5)
19323a43e2e58306afdeaa5201e8aebe
Author(s)
Song, Justin Chien Wen
Reizer, Michael Y.
Levitov, Leonid
Date Issued
September 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Song, Justin, Michael Reizer, and Leonid Levitov. “Disorder-Assisted Electron-Phonon Scattering and Cooling Pathways in Graphene.” Physical Review Letters 109.10 (2012). © 2012 American Physical Society
Version
Final published version
Abstract
We predict that graphene is a unique system where disorder-assisted scattering (supercollisions) dominates electron-lattice cooling over a wide range of temperatures, up to room temperature. This is so because for momentum-conserving electron-phonon scattering the energy transfer per collision is severely constrained due to a small Fermi surface size. The characteristic T[superscript 3] temperature dependence and power-law cooling dynamics provide clear experimental signatures of this new cooling mechanism. The cooling rate can be changed by orders of magnitude by varying the amount of disorder providing means for a variety of new applications that rely on hot-carrier transport.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
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.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevLett.109.106602
