Magnetic field and temperature effect on the localization length of poly(dA)-poly(dT) DNA molecule

A. M. Risqi, Efta Yudiarsah

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The probability of finding electrons along the DNA chain is described by localization length. We use tight-binding Hamiltonian approach, transfer matrix, and Gram-Schmidt orthogonalization method in studying the localization length of poly(dA)-poly(dT) DNA molecule. The molecule being studied consists of 102 base pairs of adenine (A) and thymine (T) as well as backbone which consists of phosphate and sugar. Electron hopping between backbone is allowed in this model. The effect of magnetic field on the localization length is studied by considering the magnetic field influence on hopping electron in DNA in the form of Peierls phase factor. The effect of temperature is studied by considering the twisting vibration of DNA molecule. The result shows localization length decreases when the temperature increase. On the other hand, when magnetic field increases localization length decreases in some energies.

Original languageEnglish
Title of host publicationProceedings of the 3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017
EditorsRatna Yuniati, Terry Mart, Ivandini T. Anggraningrum, Djoko Triyono, Kiki A. Sugeng
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735417410
DOIs
Publication statusPublished - 22 Oct 2018
Event3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017 - Bali, Indonesia
Duration: 26 Jul 201727 Jul 2017

Publication series

NameAIP Conference Proceedings
Volume2023
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017
CountryIndonesia
CityBali
Period26/07/1727/07/17

Keywords

  • localization length
  • magnetic field
  • poly(dA)-poly(dT) DNA
  • temperature

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