Coulomb Blockade Thermometry Beyond the Universal Regime
Artikel i vetenskaplig tidskrift, 2021

The charge localization of single electrons on mesoscopic metallic islands leads to a suppression of the electrical current, known as the Coulomb blockade. When this correction is small, it enables primary electron thermometry, as it was first demonstrated by Pekola et al. (Phys Rev Lett 73:2903, 1994). However, in the low temperature limit, random charge offsets influence the conductance and limit the universal behavior of a single metallic island. In this work, we numerically investigate the conductance of a junction array and demonstrate the extension of the primary regime for large arrays, even when the variations in the device parameters are taken into account. We find that our simulations agree well with measured conductance traces in the submillikelvin electron temperature regime.

Coulomb blockade thermometry

Single electron tunneling

Tunnel junction arrays

Författare

Nikolai Yurttagul

Teknologian Tutkimuskeskus (VTT)

TU Delft

Matthew Sarsby

TU Delft

Attila Geresdi

TU Delft

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Journal of Low Temperature Physics

0022-2291 (ISSN) 1573-7357 (eISSN)

Vol. 204 143-162

Ämneskategorier

Annan fysik

Annan materialteknik

Den kondenserade materiens fysik

DOI

10.1007/s10909-021-02603-w

Mer information

Senast uppdaterat

2021-07-27