Modeling the electrical conduction in DNA nanowires: Charge transfer and lattice fluctuation theories

Behnia, S.; Fathizadeh, Samira

doi:10.1103/physreve.91.022719

Cited by 16 publications

(12 citation statements)

References 56 publications

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“…This is in contrast with a simple ohmic resistor that exhibits an increase in voltage under the same conditions. This phenomenon has been previously observed experimentally in DNA. , On the contrary, quasi-Ohmic region represents the deviation from ohmic behavior and shows the nonlinear effects . In this work, we reported the spin-dependent negative differential resistance (SPNDR) in DNA by studying the I – V characteristic for spin current (Figure ).…”

Section: Resultssupporting

confidence: 57%

“…40,41 On the contrary, quasi-Ohmic region represents the deviation from ohmic behavior and shows the nonlinear effects. 42 In this work, we reported the spin-dependent negative differential resistance (SPNDR) in DNA by studying the I−V characteristic for spin current (Figure 8). This effect is experimentally reported in a selfassembled molecular chain 43 and graphene nanoribbons 44 previously.…”

Section: ■ Resultsmentioning

confidence: 99%

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DNA Spintronics: Charge and Spin Dynamics in DNA Wires

2016

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A combined analytical approach is proposed to investigate the spin-selectivity properties of DNA nanowires considering the spin degree of freedom in the extended Peyrard–Bishop–Holstein model. On the basis of a real chain of DNA sequence, no completely pure spin current through DNA is shown, instead, one of the spin currents is dominant over another and creates a spin filtering effect. In several parameter regions, the net charge current is low, and thus a nearly pure spin current could be reported. We examined the effects of external fields, temperature, and sequence variation on spin-dependent charge transfer in DNA. The results show peaks in the DNA spin polarization in some parameter values. A DNA coder can be created according to these polarization peaks. Transporting information by using the DNA spin polarization is interested in information theory. Meanwhile, other parameter values exist, where nearly pure spin currents appear. The appearance of these islands can be confirmed and predicted using the Rényi fractal dimension approach.

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Section: Resultssupporting

confidence: 57%

Section: ■ Resultsmentioning

confidence: 99%

DNA Spintronics: Charge and Spin Dynamics in DNA Wires

2016

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“…Presently, there are many papers devoted to modeling the motion of a charged particle in various-type molecular chains (e.g., [23,29,30,31,32,33,34,35,36], also reviews [11,37] and references therein). In some papers polaron is considered (according to the physical definition of SRP) for parameter values at which the polaron is localized at several sites.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of Holstein polaron in a chain with thermal fluctuations

Fialko¹,

Лахно²

2020

Preprint

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Numerical modeling is used to investigate the dynamics of a polaron in a chain with small random Langevin-like perturbations which imitate the environmental temperature T and under the influence of a constant electric field. In the semiclassical Holstein model the region of existence of polarons in the thermodynamic equilibrium state depends not only on temperature but also on the chain length. Therefore when we compute dynamics from initial polaron data, the mean displacement of the charge mass center differs for different-length chains at the same temperature. For a large radius polaron, it is shown numerically that the "mean polaron displacement" (which takes account only of the polaron peak and its position) behaves similarly for different-length chains during the time when the polaron persists. A similar slope of the polaron displacement enables one to find the polaron mean velocity and, by analogy with the charge mobility, assess the "polaron mobility". The calculated values of the polaron mobility for T ≈ 0 are close to the value at T = 0, which is small but not zero. For the parameters corresponding to the small radius polaron, simulations of dynamics demonstrate switching mode between immobile polaron and delocalized state. The position of the new polaron is not related to the position of the previous one; charge transfer occurs in the delocalized state.

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“…Electronic states of metal ion-doped M-DNA (m is Mn, Ni, Mg, Co and Fe) are figured out by optical absorption concluding charge transfer from Fe 2+ to DNA and transferred charges should be positioned close to bases [16]. Computational models are properly developed to investigate the electrical conduction in DNA nanowires by Panahi and Chitsazanmoghaddam [17] and Behnia and Fathizadeh [18]. The studies performed by Dugasani et al [19] and Nikiforov et al [20] discovered that divalent metal ion-doped DNA exhibits soft ferromagnetic (FM) behaviour.…”

Section: Introductionmentioning

confidence: 99%

Diluted Magnetic DNA Nanowires

Değer¹,

Eldem²,

Duru³

2017

Nanowires - New Insights

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DNA, as a natural biological nanowire, could be modified by inorganic atoms, either conducting or semi-conducting ones, to render feasible for technological applications and sequencing. Magnetic phase transition of modified DNA (M-DNA) nanowire, similar to diluted magnetic semiconductor (DMS) materials, occurs by changing parameters such as temperature and doping ratio having critical values. Tuning such parameters provide a pleasant control about determination of the magnetic property of M-DNA, particularly room-temperature soft ferromagnetism. In this chapter, a fundamental theory for anti-ferromagnetic Cr 3+-doped M-DNA nanowire named as diluted magnetic organic structures (DMOS) is tried to figure out the interactions representing the exotic behaviour of these type of organometallics. However, authors detailed preparation of nanowire as a global input and overall procedure of simulation based on Markov chain Monte Carlo (MCMC) method.

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Modeling the electrical conduction in DNA nanowires: Charge transfer and lattice fluctuation theories

Cited by 16 publications

References 56 publications

DNA Spintronics: Charge and Spin Dynamics in DNA Wires

DNA Spintronics: Charge and Spin Dynamics in DNA Wires

Dynamics of Holstein polaron in a chain with thermal fluctuations

Diluted Magnetic DNA Nanowires

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