Electronic quantum scattering across molecular junctions: Oligoacenes and oligophenyl graphene strips

Belayadi, Adel; Bourahla, Boualem

doi:10.1016/j.cocom.2020.e00493

Cited by 4 publications

(1 citation statement)

References 24 publications

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“…1 [55][56][57][58][59][60]. More precisely, the evanescent ones are considered only in the case of computing bound states which is not the case of our paper.…”

Section: ) Ismentioning

confidence: 99%

A spin modulating device, tuned by the Fermi energy, in honeycomb-like substrates periodically stubbed with transition-metal-dichalkogenides

Belayadi¹,

Vasilopoulos²

2022

Nanotechnology

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We investigate spin transport through graphene-like substrates stubbed vertically with transition-metal-dichalkogenides (TMDs). A tight-binding model is used based on a graphene-like Hamiltonian that includes diﬀerent types of spin-orbit coupling (SOC) terms permitted by the C3v symmetry group in TMDs/graphene-like heterostructures. The results show a spin modulation obtained by tuning the strength and sign of the Fermi energy EF and not by varying the SOC strength as is mainly the case of Datta and Das. The spin conductance is directly controlled by the value of EF . In addition, a perfect electron-spin modulation is obtained when a vertical strain is introduced. In this case, the spin conductance exhibits a strong energy dependence. The results may open the route to a combination of graphene-like substrates with TMD stubs and the development of spin-transistor devices controlled by the Fermi energy rather than the SOC strength.

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“…1 [55][56][57][58][59][60]. More precisely, the evanescent ones are considered only in the case of computing bound states which is not the case of our paper.…”

Section: ) Ismentioning

confidence: 99%

A spin modulating device, tuned by the Fermi energy, in honeycomb-like substrates periodically stubbed with transition-metal-dichalkogenides

Belayadi¹,

Vasilopoulos²

2022

Nanotechnology

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Valley-dependent tunneling through electrostatically created quantum dots in heterostructures of graphene with hexagonal boron nitride

2023

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Phonons transmission through atomic interface connecting two semi-infinite 2D lattices with different meshes

Sait

Bourahla

2021

Int. J. Mod. Phys. B

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A calculation of the phonon contribution to the coherent transport between two-dimensional (2D) lattices is presented in this paper. The model structure is obtained by the juxtaposition of semi-infinites square ([Formula: see text] and triangular ([Formula: see text] leads, which thus define the nanojunction [Formula: see text]/[Formula: see text] and its inverse [Formula: see text]/[Formula: see text]. We determine, numerically and by simulation, the 2D interface observables for different values of masses and elastic coupling in the nanojunction zone. The local dynamics and atomic nanojunction response to the microscopic changes, in the interfacial domain, are subjects to our investigation. The theoretical formalism based on the matching technique is applied to describe the lattice dynamics and the evanescent phonon modes, in the two studied 2D interfaces. We mainly analyze the vibration spectra, the coherent phonon transmission/reflection and the phononic transmittance through the interface, as elements of a Landauer–Büttiker type scattering matrix. The obtained results show that the nanojunction domain is an effective phonon splitter and suggest that its characteristics may be controlled by varying its nanometric parameters. The observed fluctuations are due to the coherent coupling between continuum modes and the phonons’ discrete states induced by the connected atomic sites.

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Electronic quantum scattering across molecular junctions: Oligoacenes and oligophenyl graphene strips

Cited by 4 publications

References 24 publications

A spin modulating device, tuned by the Fermi energy, in honeycomb-like substrates periodically stubbed with transition-metal-dichalkogenides

A spin modulating device, tuned by the Fermi energy, in honeycomb-like substrates periodically stubbed with transition-metal-dichalkogenides

Valley-dependent tunneling through electrostatically created quantum dots in heterostructures of graphene with hexagonal boron nitride

Phonons transmission through atomic interface connecting two semi-infinite 2D lattices with different meshes

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