Evidence of phonon-assisted tunnelling in electrical conduction through   DNA molecules
  We propose a phonon-assisted tunnelling model for explanation of conductivity dependence on temperature and temperature-dependent I-V characteristics in deoxyribonucleic acid (DNA) molecules. The capability of this model for explanation of conductivity peculiarities in DNA is illustrated by comparison of the temperature dependent I-V data extracted from some articles with tunnelling rate dependences on temperature and field strength computed according to the phonon-assisted tunnelling theory.   PACS Codes: 87.15.-v, 71.38.-k, 73.40.Gk 
Povilas Pipinys, Antanas Kiveris