Single-mode and multimode Fabry-Pérot interference in suspended graphene
Oksanen, Mika; Uppstu, Andreas; Laitinen, Antti; et al.Cox, Daniel J.; Craciun, Monica F.; Russo, Saverio; Harju, Ari; Hakonen, Pertti
Date: 1 March 2014
Journal
Physical Review B
Publisher
American Physical Society
Publisher DOI
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Abstract
We have achieved high-quality Fabry-Pérot interference in a suspended graphene device both in conductance and in shot noise. A Fourier analysis of these reveals two sets of overlapping, coexisting interference patterns, with the ratios of the resonance intervals being equal to the width to length ratio of the device. We show that these ...
We have achieved high-quality Fabry-Pérot interference in a suspended graphene device both in conductance and in shot noise. A Fourier analysis of these reveals two sets of overlapping, coexisting interference patterns, with the ratios of the resonance intervals being equal to the width to length ratio of the device. We show that these sets originate from the unique coexistence of longitudinal and transverse resonances, with the longitudinal resonances occurring due to bunching of modes with low transverse momentum. Finally, the high quality of our samples allows us to probe the interaction renormalization of the Fermi velocity as well as the coexistence of Fabry-Pérot oscillations with universal conductance fluctuations.
Engineering
Faculty of Environment, Science and Economy
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