Modeling of the temperature and magnetic field dependence on the density of states of G4-DNA molecules

R. Rahman, E. Yudiarsah

Research output: Contribution to journalConference articlepeer-review

Abstract

In this article, we investigate the charge-transport properties of G4-DNA molecules that are 32 base pairs long using the tight-binding Hamiltonian and Green function in numerical calculations. The transport properties are studied by calculating the density of states (DOS) of the G4-DNA model under the influence of various external magnetic field strengths and temperatures. We found that a shift in phase coherence lowers the DOS as the magnetic field increases. At zero temperature, the DOS spectrum is split into two bands of electron energies with a specific gap of zero values between them. Increasing the temperature decreases the DOS at all electron energies and narrows the energy gap in the DOS spectra when the frequency of the molecule's twisting motion is 0.77 meV.

Original languageEnglish
Article number012016
JournalIOP Conference Series: Materials Science and Engineering
Volume496
Issue number1
DOIs
Publication statusPublished - 22 Feb 2019
Event2nd International Conference on Current Progress in Functional Materials 2017, ISCPFM 2017 - Bali, Indonesia
Duration: 8 Nov 20179 Nov 2017

Keywords

  • DOS
  • G4-DNA
  • magnetic field
  • temperature

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