dc.contributor.author | Lewandowski, Cyprian Krzysztof | |
dc.contributor.author | Levitov, Leonid | |
dc.date.accessioned | 2018-04-19T18:38:52Z | |
dc.date.available | 2018-04-19T18:38:52Z | |
dc.date.issued | 2018-03 | |
dc.date.submitted | 2017-12 | |
dc.identifier.issn | 2469-9950 | |
dc.identifier.issn | 2469-9969 | |
dc.identifier.uri | http://hdl.handle.net/1721.1/114805 | |
dc.description.abstract | Interactions between charge carriers in graphene lead to logarithmic renormalization of observables mimicking the behavior known in (3+1)-dimensional quantum electrodynamics (QED). Here we analyze soft electron-hole (e-h) excitations generated as a result of fast charge dynamics, a direct analog of the signature QED effect—multiple soft photons produced by the QED vacuum shakeup. We show that such excitations are generated in photon absorption, when a photogenerated high-energy e-h pair cascades down in energy and gives rise to multiple soft e-h excitations. This fundamental process is manifested in a double-log divergence in the emission rate of soft pairs and a characteristic power-law divergence in their energy spectrum of the form 1/ω ln(ω/Δ). Strong carrier-carrier interactions make pair production a prominent pathway in the photoexcitation cascade. | en_US |
dc.publisher | American Physical Society | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1103/PhysRevB.97.115423 | en_US |
dc.rights | 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. | en_US |
dc.source | American Physical Society | en_US |
dc.title | Soft pair excitations and double-log divergences due to carrier interactions in graphene | en_US |
dc.type | Article | en_US |
dc.identifier.citation | Lewandowski, Cyprian and L. S. Levitov. "Soft pair excitations and double-log divergences due to carrier interactions in graphene." Physical Review B 97, 11 (March 2018): 115423 © 2018 American Physical Society | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Department of Physics | en_US |
dc.contributor.mitauthor | Lewandowski, Cyprian Krzysztof | |
dc.contributor.mitauthor | Levitov, Leonid | |
dc.relation.journal | Physical Review B | en_US |
dc.eprint.version | Final published version | en_US |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
dc.date.updated | 2018-03-15T18:00:28Z | |
dc.language.rfc3066 | en | |
dc.rights.holder | American Physical Society | |
dspace.orderedauthors | Lewandowski, Cyprian; Levitov, L. S. | en_US |
dspace.embargo.terms | N | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-6944-9805 | |
dc.identifier.orcid | https://orcid.org/0000-0002-4268-731X | |
mit.license | PUBLISHER_POLICY | en_US |