Shot noise in NbN SIS junctions suitable for THz radiation detection

P Dieleman; H van de Stadt; TM Klapwijk; M Schicke; KH Gundlach

Shot noise in NbN SIS junctions suitable for THz radiation detection

P Dieleman^*, H van de Stadt, TM Klapwijk, M Schicke, KH Gundlach

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

1 Citation (Scopus)

Abstract

We study the behavior of NbN SIS junctions as radiation detectors with emphasis on the shot noise generated at voltages below the gap voltage. The intrinsically large subgap current of NbN junctions is carried by pinholes with a conduction attributed to multiple Andreev reflection, leading to transported charges q much greater than e. Using this charge enhancement mechanism we explain the junction shot noise characteristics in the unpumped case as well as in the pumped case. The measured mixer noise temperature in the pumped case is more than twice that calculated with standard Tucker theory. The measured double side band noise temperatures are 1450 K at 600 GHz and 2800 K at 950 GHz.

Original language	English
Title of host publication	APPLIED SUPERCONDUCTIVITY 1997, VOLS 1 AND 2
Editors	H Rogalla, DHA Blank
Place of Publication	BRISTOL
Publisher	IoP Publishing
Pages	421-424
Number of pages	4
ISBN (Print)	0-7503-0487-1
Publication status	Published - 1997
Event	3rd European Conference on Applied Superconductivity (EUCAS 1997) - , Netherlands Duration: 30-Jun-1997 → 3-Jul-1997

Publication series

Name	INSTITUTE OF PHYSICS CONFERENCE SERIES
Publisher	IOP PUBLISHING LTD
ISSN (Print)	0951-3248

Other

Other	3rd European Conference on Applied Superconductivity (EUCAS 1997)
Country/Territory	Netherlands
Period	30/06/1997 → 03/07/1997

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@inproceedings{9a0334a0bfe54115867405fc4a759c72,

title = "Shot noise in NbN SIS junctions suitable for THz radiation detection",

abstract = "We study the behavior of NbN SIS junctions as radiation detectors with emphasis on the shot noise generated at voltages below the gap voltage. The intrinsically large subgap current of NbN junctions is carried by pinholes with a conduction attributed to multiple Andreev reflection, leading to transported charges q much greater than e. Using this charge enhancement mechanism we explain the junction shot noise characteristics in the unpumped case as well as in the pumped case. The measured mixer noise temperature in the pumped case is more than twice that calculated with standard Tucker theory. The measured double side band noise temperatures are 1450 K at 600 GHz and 2800 K at 950 GHz.",

author = "P Dieleman and {van de Stadt}, H and TM Klapwijk and M Schicke and KH Gundlach",

year = "1997",

language = "English",

isbn = "0-7503-0487-1",

series = "INSTITUTE OF PHYSICS CONFERENCE SERIES",

publisher = "IoP Publishing",

pages = "421--424",

editor = "H Rogalla and DHA Blank",

booktitle = "APPLIED SUPERCONDUCTIVITY 1997, VOLS 1 AND 2",

note = "3rd European Conference on Applied Superconductivity (EUCAS 1997) ; Conference date: 30-06-1997 Through 03-07-1997",

}

Dieleman, P, van de Stadt, H, Klapwijk, TM, Schicke, M & Gundlach, KH 1997, Shot noise in NbN SIS junctions suitable for THz radiation detection. in H Rogalla & DHA Blank (eds), APPLIED SUPERCONDUCTIVITY 1997, VOLS 1 AND 2. INSTITUTE OF PHYSICS CONFERENCE SERIES, IoP Publishing, BRISTOL, pp. 421-424, 3rd European Conference on Applied Superconductivity (EUCAS 1997), Netherlands, 30/06/1997.

Shot noise in NbN SIS junctions suitable for THz radiation detection. / Dieleman, P; van de Stadt, H; Klapwijk, TM et al.
APPLIED SUPERCONDUCTIVITY 1997, VOLS 1 AND 2. ed. / H Rogalla; DHA Blank. BRISTOL: IoP Publishing, 1997. p. 421-424 (INSTITUTE OF PHYSICS CONFERENCE SERIES).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Shot noise in NbN SIS junctions suitable for THz radiation detection

AU - Dieleman, P

AU - van de Stadt, H

AU - Klapwijk, TM

AU - Schicke, M

AU - Gundlach, KH

PY - 1997

Y1 - 1997

N2 - We study the behavior of NbN SIS junctions as radiation detectors with emphasis on the shot noise generated at voltages below the gap voltage. The intrinsically large subgap current of NbN junctions is carried by pinholes with a conduction attributed to multiple Andreev reflection, leading to transported charges q much greater than e. Using this charge enhancement mechanism we explain the junction shot noise characteristics in the unpumped case as well as in the pumped case. The measured mixer noise temperature in the pumped case is more than twice that calculated with standard Tucker theory. The measured double side band noise temperatures are 1450 K at 600 GHz and 2800 K at 950 GHz.

AB - We study the behavior of NbN SIS junctions as radiation detectors with emphasis on the shot noise generated at voltages below the gap voltage. The intrinsically large subgap current of NbN junctions is carried by pinholes with a conduction attributed to multiple Andreev reflection, leading to transported charges q much greater than e. Using this charge enhancement mechanism we explain the junction shot noise characteristics in the unpumped case as well as in the pumped case. The measured mixer noise temperature in the pumped case is more than twice that calculated with standard Tucker theory. The measured double side band noise temperatures are 1450 K at 600 GHz and 2800 K at 950 GHz.

M3 - Conference contribution

SN - 0-7503-0487-1

T3 - INSTITUTE OF PHYSICS CONFERENCE SERIES

SP - 421

EP - 424

BT - APPLIED SUPERCONDUCTIVITY 1997, VOLS 1 AND 2

A2 - Rogalla, H

A2 - Blank, DHA

PB - IoP Publishing

CY - BRISTOL

T2 - 3rd European Conference on Applied Superconductivity (EUCAS 1997)

Y2 - 30 June 1997 through 3 July 1997

ER -

Shot noise in NbN SIS junctions suitable for THz radiation detection

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