MgB2 HEB Mixers at Operation Temperatures above Liquid Helium Temperature
Paper in proceedings, 2016

In this paper we discuss results of MgB2 thin films deposition for the hot-electron bolometer (HEB) application. For this purpose a custom made hybrid physical-chemical vapour deposition (HPCVD) system was built. For films thicknesses d in the 15-45nm range the critical temperatures were from 34K to 40K. For bridges as narrow as 500nm the critical current density was >107A/cm2 indicating a high film quality. The intermediate frequency (IF) gain bandwidth (GBW) was measured at 0.4THz at various temperatures and bias points. The GBW follows the 1/d trend and is at least 6GHz for the 15nm thick sample.

MgB2

terahertz

HPCVD

superconductivity

hot-electron bolometer

Author

Evgenii Novoselov

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

Naichuan M. Zhang

Chalmers, Microtechnology and Nanoscience (MC2)

Serguei Cherednichenko

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

27th International Symposium on Space Terahertz Technology April 12-15, 2016, Nanjing, China

Infrastructure

Kollberg Laboratory

Nanofabrication Laboratory

Areas of Advance

Nanoscience and Nanotechnology (2010-2017)

Subject Categories

Nano Technology

Other Electrical Engineering, Electronic Engineering, Information Engineering

Condensed Matter Physics

More information

Created

10/8/2017