Physics

Scaling behavior of electron decoherence in a graphene Mach-Zehnder interferometer

M. Jo, J. M. Lee, et al.

This research delves into electron decoherence in a graphene-based Mach-Zehnder interferometer, revealing a fascinating crossover in interference visibility decay with temperature. Unlike traditional GaAs interferometers, graphene offers a unique avenue for exploring new realms of electron interferometry. Discover the work of M. Jo, June-Young M. Lee, A. Assouline, P. Brasseur, K. Watanabe, T. Taniguchi, P. Roche, D. C. Glattli, N. Kumada, F. D. Parmentier, H.-S. Sim, and P. Roulleau.

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Abstract

This paper investigates electron decoherence in a graphene-based Mach-Zehnder interferometer. The researchers observed a crossover in the decay of interference visibility with temperature scaled by interferometer length, transitioning from exponential decay at higher temperatures to algebraic decay at lower temperatures where decoherence is minimal. This behavior, unlike that seen in GaAs interferometers, suggests graphene's unique potential for studying unexplored regimes of electron interferometry.

Publisher

Nature Communications

Published On

Sep 17, 2022

Authors

M. Jo, June-Young M. Lee, A. Assouline, P. Brasseur, K. Watanabe, T. Taniguchi, P. Roche, D. C. Glattli, N. Kumada, F. D. Parmentier, H.-S. Sim, P. Roulleau

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