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

doi:10.1103/PhysRevB.89.121414

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

Department of Applied Physics

University of Exeter

Research output: Contribution to journal › Article › Scientific › peer-review

35 Citations (Scopus)

168 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 language	English
Article number	121414
Pages (from-to)	1-5
Number of pages	5
Journal	Physical Review B
Volume	89
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevB.89.121414
Publication status	Published - 2014
MoE publication type	A1 Journal article-refereed

Keywords

CONDUCTANCE FLUCTUATIONS
PHASE
TRANSPORT

Access to Document

10.1103/PhysRevB.89.121414

PhysRevB.89.121414Final published version, 1.82 MBLicence: CC BY

Cite this

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title = "Single-mode and multimode Fabry-P{\'e}rot interference in suspended graphene",

abstract = "We have achieved high-quality Fabry-P{\'e}rot 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-P{\'e}rot oscillations with universal conductance fluctuations.",

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year = "2014",

doi = "10.1103/PhysRevB.89.121414",

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T1 - Single-mode and multimode Fabry-Pérot interference in suspended graphene

AU - Oksanen, Mika

AU - Uppstu, Andreas

AU - Laitinen, Antti

AU - Cox, Daniel J.

AU - Craciun, Monica F.

AU - Russo, Saverio

AU - Harju, Ari

AU - Hakonen, Pertti

PY - 2014

Y1 - 2014

N2 - 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.

AB - 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.

KW - CONDUCTANCE FLUCTUATIONS

KW - PHASE

KW - TRANSPORT

KW - CONDUCTANCE FLUCTUATIONS

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KW - CONDUCTANCE FLUCTUATIONS

KW - PHASE

KW - TRANSPORT

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

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

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