Single-mode and multimode Fabry-Pérot interference in suspended graphene

Mika Oksanen, Andreas Uppstu, Antti Laitinen, Daniel J. Cox, Monica F. Craciun, Saverio Russo, Ari Harju, Pertti Hakonen

Research output: Contribution to journalArticleScientificpeer-review

21 Citations (Scopus)
116 Downloads (Pure)

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 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.
Original languageEnglish
Article number121414
Pages (from-to)1-5
Number of pages5
JournalPhysical Review B
Volume89
Issue number12
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Keywords

  • CONDUCTANCE FLUCTUATIONS
  • PHASE
  • TRANSPORT

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  • Cite this

    Oksanen, M., Uppstu, A., Laitinen, A., Cox, D. J., Craciun, M. F., Russo, S., Harju, A., & Hakonen, P. (2014). Single-mode and multimode Fabry-Pérot interference in suspended graphene. Physical Review B, 89(12), 1-5. [121414]. https://doi.org/10.1103/PhysRevB.89.121414