g-factor of electrons in gate-defined quantum dots in a strong in-plane magnetic field

Peter Stano, Chen-Hsuan Hsu, Marcel Serina, Leon C. Camenzind, Dominik M. Zumbühl, and Daniel Loss
Phys. Rev. B 98, 195314 – Published 27 November 2018

Abstract

We analyze orbital effects of an in-plane magnetic field on the spin structure of states of a gated quantum dot based in a two-dimensional electron gas. Starting with a k·p Hamiltonian, we perturbatively calculate these effects for the conduction band of GaAs, up to the third power of the magnetic field. We quantify several corrections to the g-tensor and reveal their relative importance. We find that for typical parameters, the Rashba spin-orbit term and the isotropic term, H43P2B·σ, give the largest contributions in magnitude. The in-plane anisotropy of the g-factor is, on the other hand, dominated by the Dresselhaus spin-orbit term. At zero magnetic field, the total correction to the g-factor is typically 5%–10% of its bulk value. In strong in-plane magnetic fields, the corrections are modified appreciably.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
1 More
  • Received 12 August 2018
  • Revised 29 October 2018

DOI:https://doi.org/10.1103/PhysRevB.98.195314

©2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Peter Stano1,2,3, Chen-Hsuan Hsu1, Marcel Serina4, Leon C. Camenzind4, Dominik M. Zumbühl4, and Daniel Loss1,4

  • 1RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan
  • 2Department of Applied Physics, School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
  • 3Institute of Physics, Slovak Academy of Sciences, 845 11 Bratislava, Slovakia
  • 4Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 98, Iss. 19 — 15 November 2018

Reuse & Permissions
Access Options
CHORUS

Article Available via CHORUS

Download Accepted Manuscript
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×