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 show that optical pumping of electron spins in individual InGaAs quantumdots leads to strong nuclear polarisation that we measure via the Overhausershift (OHS) in magneto-photoluminescence experiments between 0 and 4T. We finda strongly non-monotonous dependence of the OHS on the applied magnetic field,with a maximum nuclear polarisation of 40% for intermediate magnetic fields. Weobserve that the OHS is larger for nuclear fields anti-parallel to the externalfield than in the parallel configuration. A bistability in the dependence ofthe OHS on the spin polarization of the optically injected electrons is found.All our findings are qualitatively understood with a model based on a simpleperturbative approach.Comment: Phys Rev B (in press

physical review. b, condensed matter and materials physics

Bistability of the nuclear polarization created through optical pumping in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi>In</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>Ga</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:mi>As</mml:mi></mml:mrow></mml:math>quantum dots

Bistability of the nuclear polarization created through optical pumping inIn1−xGaxAsquantum dots