Single-mode and multimode Fabry-Pérot interference in suspended graphene
Cox, Daniel J.
Craciun, Monica F.
Physical Review B
American Physical Society
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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.
EU 7th Framework Programme
Academy of Finland
European Science Foundation (ESF): EUROCORES Programme EuroGRAPHENE.
Engineering and Physical Sciences Research Centre (EPSRC)
Vol. 89, Article 121414
250280 LTQ CoE