English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We study the Zeeman spin-splitting in hole quantum wires oriented along the$[011]$ and $[01\bar{1}]$ crystallographic axes of a high mobility undoped(100)-oriented AlGaAs/GaAs heterostructure. Our data shows that thespin-splitting can be switched `on' (finite $g^{*}$) or `off' (zero $g^{*}$) byrotating the field from a parallel to a perpendicular orientation with respectto the wire, and the properties of the wire are identical for the twoorientations with respect to the crystallographic axes. We also find that the$g$-factor in the parallel orientation decreases as the wire is narrowed. Thisis in contrast to electron quantum wires, where the $g$-factor is enhanced byexchange effects as the wire is narrowed. This is evidence for a $k$-dependentZeeman splitting that arises from the spin-3/2 nature of holes.

Observation of orientation- and $k$-dependent Zeeman spin-splitting in hole quantum wires on (100)-oriented AlGaAs/GaAs heterostructures