2021/10/15 by N. Moreau, Nicolas Moreau, Boris Brun +17 · 1 citation
Materials Science · Physics and Astronomy · #Coherence (philosophical gambling strategy) #Coherence length #Condensed matter physics #Coulomb #FOS: Physical sciences #Graphene #Graphene research and applications #Interference (communication) #Interferometry #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Physics #Quantum Hall effect #Quantum and electron transport phenomena #Quantum mechanics #Quasiparticle #Spectroscopy #Superconductivity #Surface and Thin Film Phenomena #cond-mat.mes-hall
paper · pdf · doi:10.48550/arxiv.2110.07979
published in arXiv (Cornell University) (Cornell University) · 5 pages, 4 figures
arxiv created 2021/10/15 · openalex publication_date 2021/10/15 · arxiv updated 2021/10/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Quantum Hall edge states offer avenues for quasiparticle interferometry, provided that the ratio between phase coherence length and quantum Hall interferometer (QHI) size is large enough. Maximizing this ratio by shrinking the QHI area favors Coulomb interactions, impairing clear interferences observation. Here, we use scanning gate spectroscopy to probe interference regime in antidots-based graphene nano-QHIs, free of localized states (LS). A simple Fabry-Perot model, without Coulomb interaction, reproduces the QHI phenomenology, even in the smallest QHI, highlighting the LS detrimental role.