Vanishing Zeeman energy in a two-dimensional hole gas
article
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.
TNO Identifier
953280
ISSN
2469-9950
Source
Physical Review B, 102, pp. 115304-1 - 115304-9.
Publisher
American Physical Society APS
Article nr.
115304
Collation
9 p.
Place of publication
College Park, MD, USA
Pages
115304-1 - 115304-9
Files
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