Zero Field Splitting of Heavy-Hole States in Quantum Dots

[Image: see text] Using inelastic cotunneling spectroscopy we observe a zero field splitting within the spin triplet manifold of Ge hut wire quantum dots. The states with spin ±1 in the confinement direction are energetically favored by up to 55 μeV compared to the spin 0 triplet state because of th...

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Autores principales: Katsaros, Georgios, Kukučka, Josip, Vukušić, Lada, Watzinger, Hannes, Gao, Fei, Wang, Ting, Zhang, Jian-Jun, Held, Karsten
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7349564/
https://www.ncbi.nlm.nih.gov/pubmed/32479090
http://dx.doi.org/10.1021/acs.nanolett.0c01466
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author Katsaros, Georgios
Kukučka, Josip
Vukušić, Lada
Watzinger, Hannes
Gao, Fei
Wang, Ting
Zhang, Jian-Jun
Held, Karsten
author_facet Katsaros, Georgios
Kukučka, Josip
Vukušić, Lada
Watzinger, Hannes
Gao, Fei
Wang, Ting
Zhang, Jian-Jun
Held, Karsten
author_sort Katsaros, Georgios
collection PubMed
description [Image: see text] Using inelastic cotunneling spectroscopy we observe a zero field splitting within the spin triplet manifold of Ge hut wire quantum dots. The states with spin ±1 in the confinement direction are energetically favored by up to 55 μeV compared to the spin 0 triplet state because of the strong spin–orbit coupling. The reported effect should be observable in a broad class of strongly confined hole quantum-dot systems and might need to be considered when operating hole spin qubits.
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spelling pubmed-73495642020-07-10 Zero Field Splitting of Heavy-Hole States in Quantum Dots Katsaros, Georgios Kukučka, Josip Vukušić, Lada Watzinger, Hannes Gao, Fei Wang, Ting Zhang, Jian-Jun Held, Karsten Nano Lett [Image: see text] Using inelastic cotunneling spectroscopy we observe a zero field splitting within the spin triplet manifold of Ge hut wire quantum dots. The states with spin ±1 in the confinement direction are energetically favored by up to 55 μeV compared to the spin 0 triplet state because of the strong spin–orbit coupling. The reported effect should be observable in a broad class of strongly confined hole quantum-dot systems and might need to be considered when operating hole spin qubits. American Chemical Society 2020-06-01 2020-07-08 /pmc/articles/PMC7349564/ /pubmed/32479090 http://dx.doi.org/10.1021/acs.nanolett.0c01466 Text en Copyright © 2020 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
spellingShingle Katsaros, Georgios
Kukučka, Josip
Vukušić, Lada
Watzinger, Hannes
Gao, Fei
Wang, Ting
Zhang, Jian-Jun
Held, Karsten
Zero Field Splitting of Heavy-Hole States in Quantum Dots
title Zero Field Splitting of Heavy-Hole States in Quantum Dots
title_full Zero Field Splitting of Heavy-Hole States in Quantum Dots
title_fullStr Zero Field Splitting of Heavy-Hole States in Quantum Dots
title_full_unstemmed Zero Field Splitting of Heavy-Hole States in Quantum Dots
title_short Zero Field Splitting of Heavy-Hole States in Quantum Dots
title_sort zero field splitting of heavy-hole states in quantum dots
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7349564/
https://www.ncbi.nlm.nih.gov/pubmed/32479090
http://dx.doi.org/10.1021/acs.nanolett.0c01466
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