Print Email Facebook Twitter Spin and orbital structure of the first six holes in a silicon metal-oxide-semiconductor quantum dot Title Spin and orbital structure of the first six holes in a silicon metal-oxide-semiconductor quantum dot Author Liles, S. D. (University of New South Wales) Li, R. (TU Delft FTQC/Veldhorst Lab; TU Delft QuTech) Yang, C. H. (University of New South Wales) Hudson, F. E. (University of New South Wales) Veldhorst, M. (TU Delft FTQC/Veldhorst Lab; TU Delft QuTech; University of New South Wales) Dzurak, Andrew S. (University of New South Wales) Hamilton, A. R. (University of New South Wales) Faculty QuTech Date 2018-12 Abstract Valence band holes confined in silicon quantum dots are attracting significant attention for use as spin qubits. However, experimental studies of single-hole spins have been hindered by challenges in fabrication and stability of devices capable of confining a single hole. To fully utilize hole spins as qubits, it is crucial to have a detailed understanding of the spin and orbital states. Here we show a planar silicon metal-oxide-semiconductor-based quantum dot device and demonstrate operation down to the last hole. Magneto-spectroscopy studies show magic number shell filling consistent with the Fock–Darwin states of a circular two-dimensional quantum dot, with the spin filling sequence of the first six holes consistent with Hund’s rule. Next, we use pulse-bias spectroscopy to determine that the orbital spectrum is heavily influenced by the strong hole–hole interactions. These results provide a path towards scalable silicon hole-spin qubits. To reference this document use: http://resolver.tudelft.nl/uuid:8d9d51ed-50fe-43cc-9f85-f6356b9e17d3 DOI https://doi.org/10.1038/s41467-018-05700-9 ISSN 2041-1723 Source Nature Communications, 9 (1) Part of collection Institutional Repository Document type journal article Rights © 2018 S. D. Liles, R. Li, C. H. Yang, F. E. Hudson, M. Veldhorst, Andrew S. Dzurak, A. R. Hamilton Files PDF s41467_018_05700_9.pdf 938.66 KB Close viewer /islandora/object/uuid:8d9d51ed-50fe-43cc-9f85-f6356b9e17d3/datastream/OBJ/view