Volume 19, Issue 4 (4-2023)                   lmj 2023, 19(4): 9-16 | Back to browse issues page

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Fathizadeh S. Tin oxide nanoparticles: Green synthesis, recognition and application in the treatment of cancer. lmj 2023; 19 (4) :9-16
URL: http://icml.ir/article-1-580-en.html
Department of Physics, Urmia University of Technology, Urmia, Iran.Research Institute for Applied Physics & Astronomy, Tabriz University, Tabriz, Iran.
Abstract:   (805 Views)
Introduction: During the last few decades, the field of spintronics has attracted many scientists due to the development of new devices that can support or directly replace molecular electronics. Spintronics studies the mutual relation between spin currents and magnetic properties of different materials. The extensive research on the DNA biomolecule has made this molecule as a complex nanostructure with high flexibility used in spintronics, nano industry and medicine.
Analysis method:  In this work, the effect of lattice phonons and irradiation photons on spin transport of DNA chain is investigated. The non-interacting Hamiltonian is written using the tight-binding model in which the spin effect is considered, and the electron-phonon interaction contribution is added using the Holstein model. Electron-photon coupling is also determined to consider the effects of light irradiation in the system. Then, we obtain the evolution equations of the system and calculate the spin currents to study the spin transport properties of the system.
Results: The obtained results show that by increasing the electron-phonon coupling, we observe the drastic changes in the spin current flowing through the system. On the other hand, the electron-photon coupling also has a significant effect on the spin transport through the system. At a low electron-photon coupling value, even with increasing photon energy, we observe no change in the spin current. But, by increasing the electron-photon coupling, it is found that the photon energy operates as a key factor that can control the spin current.
Conclusion: Interaction with lattice phonons and light irradiation can be one of the factors affecting spin transport in biological systems. Adjusting the irradiation photon energy and changing the coupling parameter makes it possible to control the spin current for designing of optoelectric devices. Optoelectric devices are one of the main components of biosensors that play a significant role in diagnosing diseases and their causes.
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Educational: Research | Subject: General
Received: 2023/04/29 | Accepted: 2023/04/30 | Published: 2023/04/30

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