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

The dynamics of the coupled electron-nuclear spin system is studied in anensemble of singly-charged (In,Ga)As/GaAs quantum dots (QDs) using periodicoptical excitation at 1 GHz repetition rate. In combination with theelectron-nuclei interaction, the highly repetitive excitation allows us to lockthe electron spins into magnetic resonance in a transverse external magneticfield. Sweeping the field to higher values, the locking leads to an effective"diamagnetic" response of significant strength due to dynamic nuclearpolarization, which shields the QD electrons at least partly from the externalfield and can even keep the internal magnetic field constant up to 1.3 T fieldvariation. We model the effect through a magnetic field-dependent polarizationrate of the nuclei, from which we suggest a strategy for adjusting the nuclearpolarization through the detuning between optical excitation and electronictransition, in addition to tuning the magnetic field.

Shielding of external magnetic field by dynamic nuclear polarization in (In,Ga)As quantum dots