Vanishing Zeeman energy in a two-dimensional hole gas
| Autor: | Del Vecchio, Patrick, Lodari, Mario, Sammak, Amir, Scappucci, Giordano, Moutanabbir, Oussama |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Phys. Rev. B 102, 115304 (2020) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.102.115304 |
| Popis: | A clear signature of Zeeman split states crossing is observed in 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 top-most and the 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 modelling of hole-based quantum devices. Comment: Corrected typos in expressions for F_l. Minor changes to sections layout |
| Databáze: | arXiv |
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