The electrical properties of poly(dA)-poly(dT) DNA molecule: Electrical current influenced by magnetic field and electric field

E. Yudiarsah, T. Adiansyah

Research output: Contribution to journalConference articlepeer-review

Abstract

This theoretical study aims to determine the electrical properties of poly(dA)-poly(dT) DNA molecule under influence of electric and magnetic fields as external disturbances. The electrical properties of the DNA is investigated using a tight-binding model in the second quantization form. Then, the Landauer-Buttiker formalism is used in calculating electric current from the transmission probability which is calculate using the green function approach. While the external interference is considered by modelling the magnetic dependent hopping phase and the electric field dependent hopping amplitude in the tight binding Hamiltonian. The calculation results shows that the electric field applied along the DNA decreases sharply the peak of the transmission band. This means that the electric field significantly weakening the quality of transmission in poly(dA)-poly(dT) DNA molecule. On the other hand, the increase in magnetic field results in the increment of maximum current and the decrement of threshold voltage.

Original languageEnglish
Article number012055
JournalJournal of Physics: Conference Series
Volume1816
Issue number1
DOIs
Publication statusPublished - 8 Mar 2021
Event10th International Conference on Theoretical and Applied Physics, ICTAP 2020 - Mataram, West Nusa Tenggara, Indonesia
Duration: 20 Nov 202022 Nov 2020

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