Tracking Primary Thermalization Events in Graphene with Photoemission at Extreme Time Scales

  • Gierz I
  • Calegari F
  • Aeschlimann S
 et al. 
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Abstract

Direct and inverse Auger scattering are amongst the primary processes that mediate the thermalization of hot carriers in semiconductors. These two processes involve the annihilation or generation of an electron-hole pair by exchanging energy with a third carrier, which is either accelerated or decelerated. Inverse Auger scattering is generally suppressed, as the decelerated carriers must have excess energies higher than the band gap itself. In graphene, which is gapless, inverse Auger scattering is instead predicted to be dominant at the earliest time delays. Here, $

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Authors

  • Cephise CachoScience and Technology Facilities Council

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  • I. Gierz

  • F. Calegari

  • S. Aeschlimann

  • M. Chávez Cervantes

  • R. T. Chapman

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