Title
Vanishing Zeeman energy in a two-dimensional hole gas
Author
Del Vecchio, P.
Lodari, M.
Sammak, A.
Scappucci, G.
Moutanabbir, O.
Publication year
2020
Abstract
A clear signature of Zeeman split states crossing is observed in a Landau fan diagram of strained germanium two-dimensional hole gas. The underlying mechanisms are discussed based on a perturbative model yielding a closed formula for the critical magnetic fields. These fields depend strongly on the energy difference between the topmost and neighboring valence bands and are sensitive to the quantum well thickness, strain, and spin-orbit interaction. The latter is a necessary feature for the crossing to occur. This framework enables a straightforward quantification of the hole-state parameters from simple measurements, thus paving the way for its use in design and modeling of hole-based quantum devices.
Subject
High Tech Systems & Materials
Industrial Innovation
To reference this document use:
http://resolver.tudelft.nl/uuid:68d5fa93-e989-4a5d-b47f-2b4d2842fce8
DOI
https://doi.org/10.1103/physrevb.102.115304
TNO identifier
953280
Publisher
American Physical Society APS, College Park, MD, USA
ISSN
2469-9950
Source
Physical Review B, 102 (102), 115304-1 - 115304-9
Document type
article