title: Phonon-Assisted Resonant Tunneling of Electrons in Graphene-Boron Nitride Transistors.
abstract: We observe a series of sharp resonant features in the differential conductance of graphene-hexagonal boron nitride-graphene tunnel transistors over a wide range of bias voltages between 10 and 200 mV. We attribute them to electron tunneling assisted by the emission of phonons of well-defined energy. The bias voltages at which they occur are insensitive to the applied gate voltage and hence independent of the carrier densities in the graphene electrodes, so plasmonic effects can be ruled out. The phonon energies corresponding to the resonances are compared with the lattice dispersion curves of graphene-boron nitride heterostructures and are close to peaks in the single phonon density of states.
authors.affiliation: School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom.|Institute of Microelectronics Technology and High Purity Materials, RAS, Chernogolovka 142432, Russia.|National University of Science and Technology "MISiS," 119049 Leninsky Prospect 4, Moscow, Russia.
authors.forename: E E
authors.initials: EE
authors.lastname: Vdovin
authors.affiliation: School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom.
authors.forename: A
authors.initials: A
authors.lastname: Mishchenko
authors.affiliation: School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom.
authors.forename: M T
authors.initials: MT
authors.lastname: Greenaway
authors.affiliation: School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom.
authors.forename: M J
authors.initials: MJ
authors.lastname: Zhu
authors.affiliation: School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom.
authors.forename: D
authors.initials: D
authors.lastname: Ghazaryan
authors.affiliation: National Graphene Institute, University of Manchester, Manchester M13 9PL, United Kingdom.
authors.forename: A
authors.initials: A
authors.lastname: Misra
authors.affiliation: Centre for Mesoscience and Nanotechnology, University of Manchester, Manchester M13 9PL, United Kingdom.
authors.forename: Y
authors.initials: Y
authors.lastname: Cao
authors.affiliation: Institute of Microelectronics Technology and High Purity Materials, RAS, Chernogolovka 142432, Russia.|National University of Science and Technology "MISiS," 119049 Leninsky Prospect 4, Moscow, Russia.
authors.forename: S V
authors.initials: SV
authors.lastname: Morozov
authors.affiliation: School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom.
authors.forename: O
authors.initials: O
authors.lastname: Makarovsky
authors.affiliation: School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom.
authors.forename: T M
authors.initials: TM
authors.lastname: Fromhold
authors.affiliation: School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom.
authors.forename: A
authors.initials: A
authors.lastname: Patanè
authors.affiliation: Radboud University, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands.
authors.forename: G J
authors.initials: GJ
authors.lastname: Slotman
authors.affiliation: Radboud University, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands.
authors.forename: M I
authors.initials: MI
authors.lastname: Katsnelson
authors.affiliation: School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom.|Centre for Mesoscience and Nanotechnology, University of Manchester, Manchester M13 9PL, United Kingdom.
authors.forename: A K
authors.initials: AK
authors.lastname: Geim
authors.affiliation: School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom.|National Graphene Institute, University of Manchester, Manchester M13 9PL, United Kingdom.
authors.forename: K S
authors.initials: KS
authors.lastname: Novoselov
authors.affiliation: School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom.|School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom.
authors.forename: L
authors.initials: L
authors.lastname: Eaves