We address the most critical issue in nano-devices: the degradation due to lattice heating. We consider different dispersions for the acoustic and optical phonon modes. We find that in small devices, due to the velocity overshoot effect lattice heating has less degrading effect on the device electrical characteristics. We also find that the use of the realistic phonon dispersion relations rather than the simplified ones does not affect the results and conclusions obtained when using linear dispersion for the acoustic modes and constant dispersion for the optical modes.

Original languageEnglish (US)
Title of host publicationPhysics of Semiconductors - 29th International Conference, ICPS 29
Number of pages2
StatePublished - 2009
Event29th International Conference on Physics of Semiconductors, ICPS 29 - Rio de Janeiro, Brazil
Duration: Jul 27 2008Aug 1 2008

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Other29th International Conference on Physics of Semiconductors, ICPS 29
CityRio de Janeiro


  • Heating effects
  • Nanodevices
  • Phonon dispersion

ASJC Scopus subject areas

  • General Physics and Astronomy


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