Breakdown of Zero-Energy Quantum Hall State in Graphene in the Light of Current Fluctuations and Shot Noise

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Breakdown of Zero-Energy Quantum Hall State in Graphene in the Light of Current Fluctuations and Shot Noise. / Laitinen, Antti; Kumar, Manohar; Elo, Teemu; Liu, Ying; Abhilash, T. S.; Hakonen, Pertti J.

julkaisussa: Journal of Low Temperature Physics, Vuosikerta 191, Nro 5-6, 2018, s. 272–287.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Bibtex - Lataa

@article{b3302785d5a842c888a60d7ce920f133,
title = "Breakdown of Zero-Energy Quantum Hall State in Graphene in the Light of Current Fluctuations and Shot Noise",
abstract = "We have investigated the cross-over from Zener tunneling of single charge carriers to avalanche type of bunched electron transport in a suspended graphene Corbino disk in the zeroth Landau level. At low bias, we find a tunneling current that follows the gyrotropic Zener tunneling behavior. At larger bias, we find an avalanche type of transport that sets in at a smaller current the larger the magnetic field is. The low-frequency noise indicates strong bunching of the electrons in the avalanches. On the basis of the measured low-frequency switching noise power, we deduce the characteristic switching rates of the avalanche sequence. The simultaneous microwave shot noise measurement also reveals intrinsic correlations within the avalanche pulses and indicate a decrease in correlations with increasing bias.",
keywords = "Dielectric breakdown, Graphene, Quantum Hall, Shot noise",
author = "Antti Laitinen and Manohar Kumar and Teemu Elo and Ying Liu and Abhilash, {T. S.} and Hakonen, {Pertti J.}",
note = "| openaire: EC/H2020/670743/EU//QuDeT",
year = "2018",
doi = "10.1007/s10909-018-1855-x",
language = "English",
volume = "191",
pages = "272–287",
journal = "Journal of Low Temperature Physics",
issn = "0022-2291",
number = "5-6",

}

RIS - Lataa

TY - JOUR

T1 - Breakdown of Zero-Energy Quantum Hall State in Graphene in the Light of Current Fluctuations and Shot Noise

AU - Laitinen, Antti

AU - Kumar, Manohar

AU - Elo, Teemu

AU - Liu, Ying

AU - Abhilash, T. S.

AU - Hakonen, Pertti J.

N1 - | openaire: EC/H2020/670743/EU//QuDeT

PY - 2018

Y1 - 2018

N2 - We have investigated the cross-over from Zener tunneling of single charge carriers to avalanche type of bunched electron transport in a suspended graphene Corbino disk in the zeroth Landau level. At low bias, we find a tunneling current that follows the gyrotropic Zener tunneling behavior. At larger bias, we find an avalanche type of transport that sets in at a smaller current the larger the magnetic field is. The low-frequency noise indicates strong bunching of the electrons in the avalanches. On the basis of the measured low-frequency switching noise power, we deduce the characteristic switching rates of the avalanche sequence. The simultaneous microwave shot noise measurement also reveals intrinsic correlations within the avalanche pulses and indicate a decrease in correlations with increasing bias.

AB - We have investigated the cross-over from Zener tunneling of single charge carriers to avalanche type of bunched electron transport in a suspended graphene Corbino disk in the zeroth Landau level. At low bias, we find a tunneling current that follows the gyrotropic Zener tunneling behavior. At larger bias, we find an avalanche type of transport that sets in at a smaller current the larger the magnetic field is. The low-frequency noise indicates strong bunching of the electrons in the avalanches. On the basis of the measured low-frequency switching noise power, we deduce the characteristic switching rates of the avalanche sequence. The simultaneous microwave shot noise measurement also reveals intrinsic correlations within the avalanche pulses and indicate a decrease in correlations with increasing bias.

KW - Dielectric breakdown

KW - Graphene

KW - Quantum Hall

KW - Shot noise

UR - http://www.scopus.com/inward/record.url?scp=85041210317&partnerID=8YFLogxK

U2 - 10.1007/s10909-018-1855-x

DO - 10.1007/s10909-018-1855-x

M3 - Article

VL - 191

SP - 272

EP - 287

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

SN - 0022-2291

IS - 5-6

ER -

ID: 17473391