2020/06/30 by A. T. Costa, P. A. D. Gonçalves, D. N. Basov +3 · 25 citations
Materials Science · Physics and Astronomy · #Condensed matter physics #Graphene #Graphene research and applications #Physics #Plasmon #Quantum and electron transport phenomena #Quantum electrodynamics #Quantum mechanics #Superconductivity #Surface and Thin Film Phenomena #cond-mat.mes-hall #cond-mat.mtrl-sci #cond-mat.str-el #cond-mat.supr-con #physics.optics
paper · pdf · open access · doi:10.1073/pnas.2012847118
published in Proceedings of the National Academy of Sciences 118(4) (National Academy of Sciences) · 8 pages, 5 figures
openalex publication_date 2021/01/21 · arxiv created 2021/01/25 · arxiv updated 2021/01/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We show that the Higgs mode of a superconductor, which is usually challenging to observe by far-field optics, can be made clearly visible using near-field optics by harnessing ultraconfined graphene plasmons. As near-field sources we investigate two examples: graphene plasmons and quantum emitters. In both cases the coupling to the Higgs mode is clearly visible. In the case of the graphene plasmons, the coupling is signaled by a clear anticrossing stemming from the interaction of graphene plasmons with the Higgs mode of the superconductor. In the case of the quantum emitters, the Higgs mode is observable through the Purcell effect. When combining the superconductor, graphene, and the quantum emitters, a number of experimental knobs become available for unveiling and studying the electrodynamics of superconductors.