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Charge transport of a spin-orbit-coupled Tomonaga-Luttinger liquid | | Chen-Hsuan Hsu
; Peter Stano
; Yosuke Sato
; Sadashige Matsuo
; Seigo Tarucha
; Daniel Loss
; | | Date: |
15 Apr 2019 | | Abstract: | The charge transport of a Tomonaga-Luttinger liquid with tunnel barriers
exhibits universal scaling: the current-voltage curves measured at various
temperatures collapse into a single curve upon rescaling. The exponent
characterizing this single curve can be used to extract the strength of
electron-electron interaction. Motivated by a recent experiment on InAs
nanowires (Sato et al., arXiv:1810.06259), we theoretically investigate the
analogous behavior of a spin-orbit-coupled Tomonaga-Luttinger liquid. We find
that the scaling exponent differs for different impurity strengths, being weak
(disorder potential) or strong (tunnel barriers), and their positions, either
in the bulk or near the edge of the wire. For each case we quantify the
exponent of the universal scaling and its modification due to the spin-orbit
coupling. Our findings serve as a guide in the determination of the interaction
strength of quasi-one-dimensional spin-orbit-coupled quantum wires from
transport measurements. | | Source: | arXiv, 1904.6869 | | Services: | Forum | Review | PDF | Favorites | |
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