Electron-phonon coupling of epigraphene at millikelvin temperatures measured by quantum transport thermometry

Bayan Karimi; Hans He; Yu Cheng Chang; Libin Wang; Jukka P. Pekola; Rositsa Yakimova; Naveen Shetty; Joonas T. Peltonen; Samuel Lara-Avila; Sergey Kubatkin

doi:10.1063/5.0031315

Electron-phonon coupling of epigraphene at millikelvin temperatures measured by quantum transport thermometry

Bayan Karimi^*, Hans He, Yu Cheng Chang, Libin Wang, Jukka P. Pekola, Rositsa Yakimova, Naveen Shetty, Joonas T. Peltonen, Samuel Lara-Avila, Sergey Kubatkin

^*Tämän työn vastaava kirjoittaja

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

1 Sitaatiot (Scopus)

117 Lataukset (Pure)

Abstrakti

We investigate the basic charge and heat transport properties of charge neutral epigraphene at sub-kelvin temperatures, demonstrating a nearly logarithmic dependence of electrical conductivity over more than two decades in temperature. Using graphene's sheet conductance as an in situ thermometer, we present a measurement of electron-phonon heat transport at mK temperatures and show that it obeys the T4 dependence characteristic for a clean two-dimensional conductor. Based on our measurement, we predict the noise-equivalent power of ∼ 10 - 22 W / Hz of the epigraphene bolometer at the low end of achievable temperatures.

Alkuperäiskieli	Englanti
Artikkeli	103102
Sivumäärä	4
Julkaisu	Applied Physics Letters
Vuosikerta	118
Numero	10
DOI - pysyväislinkit	https://doi.org/10.1063/5.0031315
Tila	Julkaistu - 8 maalisk. 2021
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Pääsy asiakirjaan

10.1063/5.0031315

Karimi_Electron-phonon.5.0031315-2Final published version, 1,25 MB

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QuESTech: QUantum Electronics Science and TECHnology training
Pekola, J. (Vastuullinen johtaja), Peltonen, J. (Projektin jäsen) & Karimi, B. (Projektin jäsen)
01/01/2018 → 31/12/2021
Projekti: EU: Framework programmes funding

OtaNano
Rissanen, A. (Manager)
Aalto-yliopisto
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OtaNano – Kylmälaboratorio
Savin, A. (Manager) & Rissanen, A. (Other)
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@article{f1e4ca53460f41bf89a5fcbda78a42e8,

title = "Electron-phonon coupling of epigraphene at millikelvin temperatures measured by quantum transport thermometry",

abstract = "We investigate the basic charge and heat transport properties of charge neutral epigraphene at sub-kelvin temperatures, demonstrating a nearly logarithmic dependence of electrical conductivity over more than two decades in temperature. Using graphene's sheet conductance as an in situ thermometer, we present a measurement of electron-phonon heat transport at mK temperatures and show that it obeys the T4 dependence characteristic for a clean two-dimensional conductor. Based on our measurement, we predict the noise-equivalent power of ∼ 10 - 22 W / Hz of the epigraphene bolometer at the low end of achievable temperatures.",

author = "Bayan Karimi and Hans He and Chang, \{Yu Cheng\} and Libin Wang and Pekola, \{Jukka P.\} and Rositsa Yakimova and Naveen Shetty and Peltonen, \{Joonas T.\} and Samuel Lara-Avila and Sergey Kubatkin",

note = "| openaire: EC/H2020/766025/EU//QuESTech ",

year = "2021",

month = mar,

day = "8",

doi = "10.1063/5.0031315",

language = "English",

volume = "118",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "10",

}

TY - JOUR

T1 - Electron-phonon coupling of epigraphene at millikelvin temperatures measured by quantum transport thermometry

AU - Karimi, Bayan

AU - He, Hans

AU - Chang, Yu Cheng

AU - Wang, Libin

AU - Pekola, Jukka P.

AU - Yakimova, Rositsa

AU - Shetty, Naveen

AU - Peltonen, Joonas T.

AU - Lara-Avila, Samuel

AU - Kubatkin, Sergey

N1 - | openaire: EC/H2020/766025/EU//QuESTech

PY - 2021/3/8

Y1 - 2021/3/8

N2 - We investigate the basic charge and heat transport properties of charge neutral epigraphene at sub-kelvin temperatures, demonstrating a nearly logarithmic dependence of electrical conductivity over more than two decades in temperature. Using graphene's sheet conductance as an in situ thermometer, we present a measurement of electron-phonon heat transport at mK temperatures and show that it obeys the T4 dependence characteristic for a clean two-dimensional conductor. Based on our measurement, we predict the noise-equivalent power of ∼ 10 - 22 W / Hz of the epigraphene bolometer at the low end of achievable temperatures.

AB - We investigate the basic charge and heat transport properties of charge neutral epigraphene at sub-kelvin temperatures, demonstrating a nearly logarithmic dependence of electrical conductivity over more than two decades in temperature. Using graphene's sheet conductance as an in situ thermometer, we present a measurement of electron-phonon heat transport at mK temperatures and show that it obeys the T4 dependence characteristic for a clean two-dimensional conductor. Based on our measurement, we predict the noise-equivalent power of ∼ 10 - 22 W / Hz of the epigraphene bolometer at the low end of achievable temperatures.

UR - https://www.scopus.com/pages/publications/85102432835

U2 - 10.1063/5.0031315

DO - 10.1063/5.0031315

M3 - Article

AN - SCOPUS:85102432835

SN - 0003-6951

VL - 118

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 10

M1 - 103102

ER -

Electron-phonon coupling of epigraphene at millikelvin temperatures measured by quantum transport thermometry

Abstrakti

Pääsy asiakirjaan

Muut tiedostot ja linkit

Sormenjälki

Projektit

QuESTech: QUantum Electronics Science and TECHnology training

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OtaNano

OtaNano – Kylmälaboratorio

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