Extrinsic spin Hall effect in inhomogeneous systems

Funato, Takumi; Kohno, Hiroshi

doi:10.1103/physrevb.102.094426

Cited by 6 publications

(3 citation statements)

References 43 publications

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“…To derive an equation for δĝ K we use the same approximations as we did in obtaining Eq. (39). We thus find…”

Section: Kinetic Equationmentioning

confidence: 55%

“…( 43) compared to the similar term in Eq. (39). The second contribution to δg K 0 originates from the term proportional to φ 1 :…”

Section: Kinetic Equationmentioning

confidence: 99%

“…(ii) This cancellation is also not complete in an extended model with the finite range impurity potential [33] and requires a refined definition of the spin current operator [37]. (iii) The dc spin Hall conductivity also remains finite in the disordered artificially engineered contacts and/or heterostructures [22,38,39]. (iv) Concerning the impact of electron interaction, general arguments were put forward to suggest that vanishing of the dc spin current is an exact property of the Rashba 2DES with any nonmagnetic interaction [25,26].…”

Section: Introductionmentioning

confidence: 99%

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Spin Hall conductivity of interacting two-dimensional electron systems

Dzero¹,

Levchenko²

2022

Preprint

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We consider two-dimensional electron system subjected to a short-ranged nonmagnetic disorder potential, Coulomb interactions, and Rashba spin-orbit coupling. The path-integral approach incorporated within the Keldysh formalism is used to derive the kinetic equation for the semiclassical Green's function and applied to compute the spin current within the linear response theory. We discuss the frequency dependence of the spin Hall conductivity and further elucidate the role of electron interactions at finite temperatures both for the ballistic and diffusive regimes of transport. We argue that interaction corrections to the spin Hall effect stem from the quantum interference processes whose magnitude is estimated in terms of parameters of the considered model.

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“…To derive an equation for δĝ K we use the same approximations as we did in obtaining Eq. (39). We thus find…”

Section: Kinetic Equationmentioning

confidence: 55%

“…( 43) compared to the similar term in Eq. (39). The second contribution to δg K 0 originates from the term proportional to φ 1 :…”

Section: Kinetic Equationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spin Hall conductivity of interacting two-dimensional electron systems

Dzero¹,

Levchenko²

2022

Preprint

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Tunable Intrinsic Spin Hall Conductivity in Two-Dimensional van der Waals Ferroelectric WTe₂

Zhang,

Hu,

Gao

et al. 2024

ACS Appl. Electron. Mater.

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We conducted a systematic study of the spin Hall conductivity (SHC) of bilayer WTe 2 and investigated the effects of interlayer sliding and interlayer distance on the SHC. We discovered that while the SHC is robust against changes in interlayer sliding, it can be tuned by adjusting the distance between the layers. We found that the interlayer distance-dependent SHC arises from interlayer coupling, which determines the hybridization strength of W-d and Te-p orbitals and subsequently affects the SHC. Therefore, changing the distance between layers in bilayer WTe 2 can effectively tune the SHC. These findings not only enhance our fundamental understanding of the SHC in bilayer WTe 2 but also provide guidelines for the development of next-generation spintronic devices.

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Tunable intrinsic spin Hall conductivity in bilayer PtTe2 by controlling the stacking mode

Jin

Wei

et al. 2021

Phys. Rev. B

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Extrinsic spin Hall effect in inhomogeneous systems

Cited by 6 publications

References 43 publications

Spin Hall conductivity of interacting two-dimensional electron systems

Spin Hall conductivity of interacting two-dimensional electron systems

Tunable Intrinsic Spin Hall Conductivity in Two-Dimensional van der Waals Ferroelectric WTe₂

Tunable intrinsic spin Hall conductivity in bilayer PtTe2 by controlling the stacking mode

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Extrinsic spin Hall effect in inhomogeneous systems

Cited by 6 publications

References 43 publications

Spin Hall conductivity of interacting two-dimensional electron systems

Spin Hall conductivity of interacting two-dimensional electron systems

Tunable Intrinsic Spin Hall Conductivity in Two-Dimensional van der Waals Ferroelectric WTe2

Tunable intrinsic spin Hall conductivity in bilayer PtTe2 by controlling the stacking mode

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Product

Resources

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Tunable Intrinsic Spin Hall Conductivity in Two-Dimensional van der Waals Ferroelectric WTe₂