MgB2 HEB Mixers at Operation Temperatures above Liquid Helium Temperature
Paper i proceeding, 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

Författare

Evgenii Novoselov

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Naichuan M. Zhang

Chalmers, Mikroteknologi och nanovetenskap (MC2)

Serguei Cherednichenko

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

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

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Nanovetenskap och nanoteknik

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Nanoteknik

Annan elektroteknik och elektronik

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2017-10-08