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

Autor:	Efta Yudiarsah, T. Adiansyah
Rok vydání:	2021
Předmět:	History chemistry.chemical_compound Electrical current Materials science chemistry Chemical physics Electric field DNA Computer Science Applications Education Magnetic field
Zdroj:	Journal of Physics: Conference Series. 1816:012055
ISSN:	1742-6596 1742-6588
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::39323e6e68635b797cf5f81cec8e0c7e https://doi.org/10.1088/1742-6596/1816/1/012055 Zobrazit plný text záznamu