Signature of Schwinger's pair creation rate via radiation generated in graphene by strong electric current

B. Rosenstein, M. Lewkowicz, H. C. Kao

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Electron - hole pairs are copuously created by an applied electric field near the Dirac point in graphene or similar 2D electronic systems. It was shown recently that for sufficiently large electric fields E and ballistic times the I-V characteristics become strongly nonlinear due to Schwinger's pair creation rate, proportional to E3/2. Since there is no energy gap the radiation from the pairs' annihilation is enhanced. The spectrum of radiation is calculated and exhibits a maximum at The angular and polarization dependence of the emitted photons with respect to the graphene sheet is quite distinctive. For very large currents the recombination rate becomes so large that it leads to the second Ohmic regime due to radiation friction.

Original languageEnglish
Article number042051
JournalJournal of Physics: Conference Series
Volume400
Issue numberPART 4
DOIs
Publication statusPublished - 2012 Jan 1
Event26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China
Duration: 2011 Aug 102011 Aug 17

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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