Low noise MgB2 terahertz hot-electron bolometer mixers
Journal article, 2012

We report on low noise terahertz bolometric mixers made of MgB2 superconducting thin films. For a 10-nm-thick MgB2 film, the lowest mixer noise temperature was 600 K at 600 GHz. For 30 to 10-nm-thick films, the mixer gain bandwidth is an inverse function of the film thickness, reaching 3.4 GHz for the 10-nm film. As the critical temperature of the film decreases, the gain bandwidth also decreases, indicating the importance of high quality thin films for large gain bandwidth mixers. The results indicate the prospect of achieving a mixer gain bandwidth as large as 10-8 GHz for 3 to 5-nm-thick MgB2 films.

HEB

bolometers

Author

Stella Bevilacqua

Chalmers, Microtechnology and Nanoscience (MC2), Terahertz and Millimetre Wave Laboratory

Serguei Cherednichenko

Chalmers, Microtechnology and Nanoscience (MC2), Terahertz and Millimetre Wave Laboratory

Vladimir Drakinskiy

Chalmers, Microtechnology and Nanoscience (MC2), Terahertz and Millimetre Wave Laboratory

Jan Stake

Chalmers, Microtechnology and Nanoscience (MC2), Terahertz and Millimetre Wave Laboratory

Hiroyuki Shibata

Nippon Telegraph and Telephone Corporation

Yasuhiro Tokura

Nippon Telegraph and Telephone Corporation

Applied Physics Letters

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

Vol. 100 3

Areas of Advance

Information and Communication Technology

Subject Categories

Aerospace Engineering

Other Electrical Engineering, Electronic Engineering, Information Engineering

Infrastructure

Nanofabrication Laboratory

DOI

10.1063/1.3678027

More information

Created

10/7/2017