Electron-phonon coupling of epigraphene at millikelvin temperatures measured by quantum transport thermometry
Artikel i vetenskaplig tidskrift, 2021

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.

Författare

Bayan Karimi

Aalto-Yliopisto

Hans He

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Yu Cheng Chang

Aalto-Yliopisto

Libin Wang

Aalto-Yliopisto

J. Pekola

Aalto-Yliopisto

Moscow Institute of Physics and Technology

Rositsa Yakimova

Linköpings universitet

Naveen Shetty

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Joonas T. Peltonen

Aalto-Yliopisto

Samuel Lara Avila

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Sergey Kubatkin

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 118 10 103102

Ämneskategorier

Energiteknik

Atom- och molekylfysik och optik

Den kondenserade materiens fysik

DOI

10.1063/5.0031315

Mer information

Senast uppdaterat

2021-03-25