The transport and optoelectronic properties of γ-graphyne-based molecular magnetic tunnel junctions

Li, Jin; Xu, Li-Chun; Yang, Yongzhen; Liu, Xuguang; Yang, Zhi

doi:10.1016/j.carbon.2018.02.094

Cited by 23 publications

(6 citation statements)

References 60 publications

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“…4c. Similar to zigzag graphene nanoribbons, the ZγGYNRs are known to be magnetic [56]. However, due to the presence of strain, the coupling between the electrodes and the central region leads to the changes of original magnetic distribution.…”

Section: Resultsmentioning

confidence: 99%

Strain Investigation on Spin-Dependent Transport Properties of γ-Graphyne Nanoribbon Between Gold Electrodes

Zhang

et al. 2021

Nanoscale Res Lett

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Strain engineering has become one of the effective methods to tune the electronic structures of materials, which can be introduced into the molecular junction to induce some unique physical effects. The various γ-graphyne nanoribbons (γ-GYNRs) embedded between gold (Au) electrodes with strain controlling have been designed, involving the calculation of the spin-dependent transport properties by employing the density functional theory. Our calculated results exhibit that the presence of strain has a great effect on transport properties of molecular junctions, which can obviously enhance the coupling between the γ-GYNR and Au electrodes. We find that the current flowing through the strained nanojunction is larger than that of the unstrained one. What is more, the length and strained shape of the γ-GYNR serves as the important factors which affect the transport properties of molecular junctions. Simultaneously, the phenomenon of spin-splitting occurs after introducing strain into nanojunction, implying that strain engineering may be a new means to regulate the electron spin. Our work can provide theoretical basis for designing of high performance graphyne-based devices in the future.

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Section: Resultsmentioning

confidence: 99%

Strain Investigation on Spin-Dependent Transport Properties of γ-Graphyne Nanoribbon Between Gold Electrodes

Zhang

et al. 2021

Nanoscale Res Lett

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“…When tailored into GYNRs or GDYNRs with zigzag edges, the spinning electron at the edges induce magnetism. [67][68][69][70][71][72][73][74][75][76][77][78][79] 3.2.1. The effect of dimensions on the magnetic properties.…”

Section: Magnetic Propertiesmentioning

confidence: 99%

“…When tailored into GYNRs or GDYNRs with zigzag edges, the spinning electron at the edges induce magnetism. 67–79…”

Section: Properties Of Gynrs and Gdynrsmentioning

confidence: 99%

Graphyne and graphdiyne nanoribbons: from their structures and properties to potential applications

Liu,

Wang,

et al. 2024

Phys. Chem. Chem. Phys.

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“…Moreover, as a member of the large graphyne family, γ-graphyne possesses high carrier mobility and a natural direct bandgap. Extensive study has shown that γ-graphyne has many excellent spin transport properties for electronic device applications [47][48][49][50][51]. In a previous study, we also investigated the influence of strain on the transport properties based on γ-graphyne between gold electrodes, and obtained some good spin properties [52][53][54].…”

Section: Introductionmentioning

confidence: 99%

Modulation of the spin transport properties of γ-graphyne by chemical anchoring groups and strain

Li¹,

Li²,

Zhang³

et al. 2022

J. Phys. D: Appl. Phys.

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Chemical anchoring groups can modulate the connecting between metal electrode surface and central molecule. And the distribution of electronic states and charge transport in monomolecular devices energy level can also be regulated by chemical anchoring groups. Thus the introduction of different anchoring groups will inevitably have some influence on multifunctional molecular devices. Moreover, strain effect is also one of an important method for electronic property modulation of two-dimensional materials. Therefore, in this paper, three different chemical anchoring groups are combined with compressive and tensile strains, aiming to seek the dual modulation behavior on the spin-resolved transport properties of γ-graphyne molecular devices. Our calculation results suggest that the chemical anchoring groups of pyrrole (C4H5N), thiophene (C4H4S) and 1H-Phosphole (C4H5P) molecules combined with strain have a good regulation effect on the transport of designed molecular devices, which can be seen from the transmission spectra and molecular energy spectrum (MES). In addition, the dual modulation can induce spin-polarization phenomenon and the maximum of spin filtering efficiency (SFE) reaches up to 90%. Furthermore, the negative differential resistance (NDR) behavior has been achieved in the proposed device and the maximum of the peak to valley ratio (PVR) can reach up to 12.14. Our findings may provide a theoretical basis for the dual modulation of molecular junctions by chemical anchoring groups and strain for future nanoelectronic devices.

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The transport and optoelectronic properties of γ-graphyne-based molecular magnetic tunnel junctions

Cited by 23 publications

References 60 publications

Strain Investigation on Spin-Dependent Transport Properties of γ-Graphyne Nanoribbon Between Gold Electrodes

Strain Investigation on Spin-Dependent Transport Properties of γ-Graphyne Nanoribbon Between Gold Electrodes

Graphyne and graphdiyne nanoribbons: from their structures and properties to potential applications

Modulation of the spin transport properties of γ-graphyne by chemical anchoring groups and strain

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