Open AccessI-V characteristic of Poly(dA)-poly(dT) DNA molecule: the role of internal electric field
Author(s) -
Efta Yudiarsah
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1816/1/012060
Subject(s) - electric field , voltage , electron , molecule , hamiltonian (control theory) , amplitude , formalism (music) , physics , electron localization function , atomic physics , molecular physics , chemistry , condensed matter physics , materials science , quantum mechanics , art , mathematical optimization , musical , mathematics , visual arts
The effect of an internal electric field built up along the Poly(dA)-poly(dT) DNA molecule on the electron transport in the molecule has been studied. The electric field dependent electron hopping amplitude has been used in the tight-binding Hamiltonian model of a Poly(dA)-poly(dT) DNA molecule. Green’s function technique is used in calculating electron transmission probability, which is then used for computing current as a function of voltage by employing the Landauer-Büttiker formalism. It is observed that the internal electric field can cause the current decreases with voltages. The current reaches its maximum at a lower voltage as the internal electric field increases.