Electron diffusion induced valley Hall effect and nonlinear galvanodiffusive transport in hexagonal two-dimensional Dirac monolayer materials

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Electron diffusion induced valley Hall effect and nonlinear galvanodiffusive transport in hexagonal two-dimensional Dirac monolayer materials. / Snegirev, A. V.; Kovalev, V. M.; Entin, M. V.

In: Physical Review B, Vol. 107, No. 8, 085415, 15.02.2023.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{81f52d18fd6342448e3e42febf467a9d,

title = "Electron diffusion induced valley Hall effect and nonlinear galvanodiffusive transport in hexagonal two-dimensional Dirac monolayer materials",

abstract = "Diffusion currents are theoretically examined in two-dimensional Dirac materials, such as those of the transition metal dichalcogenides (TMD) family. The transversal effects are analogues of the valley Hall (VHE) and photogalvanic (PGE) transport phenomena in cases when the electron driving force is not an electric field but a gradient of electron density distribution in the sample. The latter can be created by a finite-sized laser spot or by the injection of electrons from other materials. We develop the theory of the diffusive VHE effect assuming the anisotropic electron-short-range-impurity skew scattering. The electron PGE-like transport caused by higher electron-density derivatives is analyzed assuming the trigonal warping anisotropy of electron valleys in a TMD monolayer. The nonlinear responses on an electron-density gradient are studied as well. The isotropic processes of electron scattering off the short-range and Coulomb centers are taken into account in the PGE-like transport theory.",

author = "Snegirev, {A. V.} and Kovalev, {V. M.} and Entin, {M. V.}",

note = "This paper was financially supported by the Foundation for the Advancement of Theoretical Physics and Mathematics BASIS and RFBR (Project No. 20-02-00622).",

year = "2023",

month = feb,

day = "15",

doi = "10.1103/PhysRevB.107.085415",

language = "English",

volume = "107",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

number = "8",

}

RIS

TY - JOUR

T1 - Electron diffusion induced valley Hall effect and nonlinear galvanodiffusive transport in hexagonal two-dimensional Dirac monolayer materials

AU - Snegirev, A. V.

AU - Kovalev, V. M.

AU - Entin, M. V.

N1 - This paper was financially supported by the Foundation for the Advancement of Theoretical Physics and Mathematics BASIS and RFBR (Project No. 20-02-00622).

PY - 2023/2/15

Y1 - 2023/2/15

N2 - Diffusion currents are theoretically examined in two-dimensional Dirac materials, such as those of the transition metal dichalcogenides (TMD) family. The transversal effects are analogues of the valley Hall (VHE) and photogalvanic (PGE) transport phenomena in cases when the electron driving force is not an electric field but a gradient of electron density distribution in the sample. The latter can be created by a finite-sized laser spot or by the injection of electrons from other materials. We develop the theory of the diffusive VHE effect assuming the anisotropic electron-short-range-impurity skew scattering. The electron PGE-like transport caused by higher electron-density derivatives is analyzed assuming the trigonal warping anisotropy of electron valleys in a TMD monolayer. The nonlinear responses on an electron-density gradient are studied as well. The isotropic processes of electron scattering off the short-range and Coulomb centers are taken into account in the PGE-like transport theory.

AB - Diffusion currents are theoretically examined in two-dimensional Dirac materials, such as those of the transition metal dichalcogenides (TMD) family. The transversal effects are analogues of the valley Hall (VHE) and photogalvanic (PGE) transport phenomena in cases when the electron driving force is not an electric field but a gradient of electron density distribution in the sample. The latter can be created by a finite-sized laser spot or by the injection of electrons from other materials. We develop the theory of the diffusive VHE effect assuming the anisotropic electron-short-range-impurity skew scattering. The electron PGE-like transport caused by higher electron-density derivatives is analyzed assuming the trigonal warping anisotropy of electron valleys in a TMD monolayer. The nonlinear responses on an electron-density gradient are studied as well. The isotropic processes of electron scattering off the short-range and Coulomb centers are taken into account in the PGE-like transport theory.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85149708027&origin=inward&txGid=e91cbc199bfeac7e864a22d84d5dea14

UR - https://www.mendeley.com/catalogue/e88a0f10-b83e-3429-8c04-942f2d5584c4/

U2 - 10.1103/PhysRevB.107.085415

DO - 10.1103/PhysRevB.107.085415

M3 - Article

VL - 107

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 8

M1 - 085415

ER -

ID: 59242166