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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The magnetic field dependence of the electronic properties of \textit{real}single vertical quantum dots in circular and rectangular mesas is investigatedwithin a full three-dimensional multiscale self-consistent approach without any{\it \'a priori} assumptions about the shape and strength of the confinementpotential. The calculated zero field electron addition energies are in goodagreement with available experimental data for both mesa geometries. Chargingdiagrams in a magnetic field for number of electrons up to five are alsocomputed. Consistent with the experimental data, we found that the chargingcurves for the rectangular mesa dot in a magnetic field are flatter and exhibitless features than for a circular mesa dot. Evolution of the singlet-tripletenergy separation in the two electron system for both dot geometries inmagnetic field was also investigated. In the limit of large field, beyond thesinglet-triplet transition, the singlet-triplet energy difference continues tobecome more negative in a circular mesa dot without any saturation within therange of considered magnetic fields whilst it is predicted to asymptoticallyapproach zero for the rectangular mesa dot. This different behavior isattributed to the symmetry "breaking" that occurs in the singlet wave-functionsin the rectangular mesa dot but not in the circular one.Comment: 12 pages, 8 gifure

Spin configurations in circular and rectangular vertical quantum dots in a magnetic field: Three-dimensional self-consistent simulations