Home > Research > Publications & Outputs > Progress in cooling nanoelectronic devices to u...

Electronic data

  • ult_nanoelectronic_devices

    Accepted author manuscript, 3.91 MB, PDF document

    Available under license: CC BY: Creative Commons Attribution 4.0 International License

Links

Text available via DOI:

View graph of relations

Progress in cooling nanoelectronic devices to ultra-low temperatures

Research output: Contribution to journalReview article

E-pub ahead of print
Close
<mark>Journal publication date</mark>5/06/2020
<mark>Journal</mark>Journal of Low Temperature Physics
Number of pages31
Publication statusE-pub ahead of print
Early online date5/06/20
Original languageEnglish

Abstract

Here we review recent progress in cooling micro/nanoelectronic devices significantly below 10 mK. A number of groups worldwide are working to produce sub-millikelvin on-chip electron temperatures, motivated by the possibility of observing new physical effects and improving the performance of quantum technologies, sensors and metrological standards. The challenge is a longstanding one, with the lowest reported on-chip electron temperature having remained around 4 mK for more than 15 years. This is despite the fact that microkelvin temperatures have been accessible in bulk materials since the mid 20th century. In this review we describe progress made in the last five years using new cooling techniques. Developments have been driven by improvements in the understanding of nanoscale physics, material properties and heat flow in electronic devices at ultralow temperatures, and have involved collaboration between universities and institutes, physicists and engineers. We hope that this review will serve as a summary of the current state-of-the-art, and provide a roadmap for future developments. We focus on techniques that have shown, in experiment, the potential to reach sub-millikelvin electron temperatures. In particular, we focus on on-chip demagnetisation refrigeration. Multiple groups have used this technique to reach temperatures around 1 mK, with a current lowest temperature below 0.5 mK.