Spatial separation of spin currents in transition metal dichalcogenides

Journal Article (2023)
Author(s)

A.L. Rigotti Manesco (Kavli institute of nanoscience Delft, TU Delft - QN/Akhmerov Group)

A. Pulkin (Kavli institute of nanoscience Delft, TU Delft - QRD/Wimmer Group, TU Delft - QuTech Advanced Research Centre)

Research Group
QN/Akhmerov Group
Copyright
© 2023 A.L. Rigotti Manesco, A. Pulkin
DOI related publication
https://doi.org/10.21468/SciPostPhysCore.6.2.036
More Info
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Publication Year
2023
Language
English
Copyright
© 2023 A.L. Rigotti Manesco, A. Pulkin
Research Group
QN/Akhmerov Group
Issue number
2
Volume number
6
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Abstract

We theoretically predict spatial separation of spin-polarized ballistic currents in transition metal dichalcogenides (TMDs) due to trigonal warping. We quantify the effect in terms of spin polarization of charge carrier currents in a prototypical 3-terminal ballistic device where spin-up and spin-down charge carriers are collected by different leads. We show that the magnitude of the current spin polarization depends strongly on the charge carrier energy and the direction with respect to crystallographic orientations in the device. We study the (negative) effect of lattice imperfections and disorder on the observed spin polarization. Our investigation provides an avenue towards observing spin discrimination in a defect-free time reversal-invariant material.