Regensburg 2022 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 13: Quantum Dots, Quantum Wires, Point Contacts
TT 13.3: Talk
Tuesday, September 6, 2022, 10:00–10:15, H23
Staggered spin-orbit interaction in a nanoscale device — Lauriane Contamin1, Tino Cubaynes1, William Legrand1, •Magdalena Marganska2, Matthieu Desjardins1, Matthieu Dartiailh1, Zaki Leghtas1,3,4, Andre Thiaville5, Stanislas Rohart5, Audrey Cottet1, Matthieu Delbecq1, and Takis Kontos1 — 1Laboratoire de Physique de l'Ecole Normale Superieure, ENS, Universite PSL, CNRS, Sorbonne Universite, Universite Paris-Diderot, Sorbonne Paris Cite, Paris, France — 2Institute for Theoretical Physics, University of Regensburg, Germany — 3QUANTIC Team, INRIA de Paris, Paris, France — 4Centre Automatique et Systemes, Mines Paris-Tech, PSL Research University, Paris, France — 5Laboratoire de Physique des Solides, Universite Paris-Saclay, CNRS, UMR 8502, Orsay, France
The coupling of the spin and the motion of charge carriers is an important ingredient for the manipulation of the spin degree of freedom and for the emergence of topological matter. Creating domain walls in the spin-orbit interaction at the nanoscale may turn out to be a crucial resource for engineering topological excitations suitable for universal topological quantum computing or for new schemes for spin quantum bits. Realizing this in natural platforms remains a challenge. Using high resolution circuit quantum electrodynamics magneto-spectroscopy, we show how this can be implemented in carbon nanotubes with a staggered synthetic spin-orbit interaction induced by two lithographically patterned magnetically textured gates.