Events

R. G. Herb Condensed Matter Seminars

<< Fall 2017 Spring 2018 Summer 2018 >>
Subscribe your calendar or receive email announcements of events

Events During the Week of March 4th through March 11th, 2018

Monday, March 5th, 2018

No events scheduled

Tuesday, March 6th, 2018

No events scheduled

Wednesday, March 7th, 2018

No events scheduled

Thursday, March 8th, 2018

No events scheduled

Friday, March 9th, 2018

Magnetic cooling and On-chip thermometry for nanoelectronics below 10 mK
Time: 10:00 am
Place: 5310 Chamberlin
Speaker: Mario Palma
Abstract: Cooling of nanoelectronic devices below 1mK is a challenging task, since the thermal coupling with the dilution refrigerator becomes weak at low temperatures and electronic devices are extremely susceptible to external heat leaks such as microwave radiation and electrical noise. Despite these technological challenges, there is a completely new world of physics, which can be explored once low temperatures are achieved. To reach such low temperature we developed a parallel network of nuclear refrigerators, which combines magnetic nuclear refrigeration technique with transport setup, by cooling of single measurement leads. In order to evaluate the cooling capacity of the setup, we developed various on-chip thermometry to read temperature below 10 mK. In particular, we focused on normal metal-Insulator-superconductor tunnel junctions, which are used as primary and secondary thermometer down to 7 mK. Furthermore, we implemented nuclear refrigeration of Coulomb blockade thermometer, proving cooling of the device down to 2.8 mK, which is the lowest temperature ever reported so far in a nanoelectronic device.
Host: Eriksson
Add this event to your calendar