TY - JOUR
T1 - Electromagnetic response of the surface states of a topological insulator nanowire embedded within a resonator
AU - Haver, Shimon Arie
AU - Ginossar, Eran
AU - de Graaf, Sebastian E.
AU - Grosfeld, Eytan
N1 - Funding Information: This project has received funding from the European Unions Horizon 2020 research and innovation programme under grant agreement No. 766714. S.A.H. and E.Gr. acknowledge support from the Israel Science Foundation under grant 1626/16. Publisher Copyright: © 2023, The Author(s).
PY - 2023/12/1
Y1 - 2023/12/1
N2 - Exploring the interplay between topological phases and photons opens new avenues for investigating novel quantum states. Here we show that superconducting resonators can serve as sensitive probes for properties of topological insulator nanowires (TINWs) embedded within them. By combining a static, controllable magnetic flux threading the TINW with an additional oscillating electromagnetic field applied perpendicularly, we show that orbital resonances can be generated and are reflected in periodic changes of the Q-factor of the resonator as a function of the flux. This response probes the confinement of the two-dimensional Dirac orbitals on the surface of the TINW, revealing their density of states and specific transition rules, as well as their dependence on the applied flux. Our approach represents a promising cross-disciplinary strategy for probing topological solid state materials using state-of-the-art photonic cavities, which would avoid the need for attaching contacts, thereby enabling access to electronic properties closer to the pristine topological states.
AB - Exploring the interplay between topological phases and photons opens new avenues for investigating novel quantum states. Here we show that superconducting resonators can serve as sensitive probes for properties of topological insulator nanowires (TINWs) embedded within them. By combining a static, controllable magnetic flux threading the TINW with an additional oscillating electromagnetic field applied perpendicularly, we show that orbital resonances can be generated and are reflected in periodic changes of the Q-factor of the resonator as a function of the flux. This response probes the confinement of the two-dimensional Dirac orbitals on the surface of the TINW, revealing their density of states and specific transition rules, as well as their dependence on the applied flux. Our approach represents a promising cross-disciplinary strategy for probing topological solid state materials using state-of-the-art photonic cavities, which would avoid the need for attaching contacts, thereby enabling access to electronic properties closer to the pristine topological states.
UR - http://www.scopus.com/inward/record.url?scp=85159855437&partnerID=8YFLogxK
U2 - https://doi.org/10.1038/s42005-023-01209-w
DO - https://doi.org/10.1038/s42005-023-01209-w
M3 - Article
SN - 2399-3650
VL - 6
JO - Communications Physics
JF - Communications Physics
IS - 1
M1 - 101
ER -