Recent progress in developing HTS quasi-particle injection devices

C.W. Schneider; R. Schneider; R. Moerman; G.J. Gerritsma; H. Rogalla

Recent progress in developing HTS quasi-particle injection devices

C.W. Schneider, R. Schneider, R. Moerman, G.J. Gerritsma, H. Rogalla

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

Abstract

In recent years, there was some progress in developing HTS three-terminal devices based on quasi-particles injection with a current gain of up to 10. This is still one order less than already demonstrated for low-T-c junctions. The main obstacle for further progress is the unsolved problem of a suitable HTS barrier which allows for quasi-particle tunneling. If the preparation conditions for barrier materials such as natural YBa2Cu3O7-delta and SrTiO3 can be better controlled, as well as the quality of the YBa2Cu3O7-delta surface improved, this kind of device could be developed into a useful fast current switch or even implemented in superconducting digital electronics. We investigated the properties of planar injection devices with (001) YBa2Cu3O7-delta as HTS superconductor, a natural oxide, PTBa2Cu3O7-delta and PrBa2Cu3-xGaxO7-delta barriers with a normal conducting counter electrode. YBa2Cu3O7-delta films used showed an average surface roughness between 1 and 6 nm. The observed current gain for devices with a natural barrier was 6.2 at 40 K and for PBCO and PBCGO barrier less than one between T-c and 10 K.

Original language	English
Title of host publication	Applied Superconductivity 1997
Subtitle of host publication	Proceedings of EUCAS 1997, Third European Conference on Applied Superconductivity, held in the Netherlands, 30 June-3 July 1997
Editors	H. Rogalla, D.H.A. Blank
Publisher	Institute of Physics (IOP)
Pages	437-440
Number of pages	4
ISBN (Print)	0750304871
Publication status	Published - 19 Dec 1997
Event	3rd European Conference on Applied Superconductivity, EUCAS 1997 - Veldhoven, Netherlands Duration: 30 Jun 1997 → 3 Jul 1997 Conference number: 3

Publication series

Name	Institute of Physics Conference Series
Publisher	Institute of Physics
Volume	158
ISSN (Print)	0951-3248

Conference

Conference	3rd European Conference on Applied Superconductivity, EUCAS 1997
Abbreviated title	EUCAS
Country/Territory	Netherlands
City	Veldhoven
Period	30/06/97 → 3/07/97

Keywords

METIS-130020

Cite this

Schneider, C. W., Schneider, R., Moerman, R., Gerritsma, G. J., & Rogalla, H. (1997). Recent progress in developing HTS quasi-particle injection devices. In H. Rogalla, & D. H. A. Blank (Eds.), Applied Superconductivity 1997: Proceedings of EUCAS 1997, Third European Conference on Applied Superconductivity, held in the Netherlands, 30 June-3 July 1997 (pp. 437-440). (Institute of Physics Conference Series; Vol. 158). Institute of Physics (IOP).

Schneider, C.W. ; Schneider, R. ; Moerman, R. et al. / Recent progress in developing HTS quasi-particle injection devices. Applied Superconductivity 1997: Proceedings of EUCAS 1997, Third European Conference on Applied Superconductivity, held in the Netherlands, 30 June-3 July 1997. editor / H. Rogalla ; D.H.A. Blank. Institute of Physics (IOP), 1997. pp. 437-440 (Institute of Physics Conference Series).

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title = "Recent progress in developing HTS quasi-particle injection devices",

abstract = "In recent years, there was some progress in developing HTS three-terminal devices based on quasi-particles injection with a current gain of up to 10. This is still one order less than already demonstrated for low-T-c junctions. The main obstacle for further progress is the unsolved problem of a suitable HTS barrier which allows for quasi-particle tunneling. If the preparation conditions for barrier materials such as natural YBa2Cu3O7-delta and SrTiO3 can be better controlled, as well as the quality of the YBa2Cu3O7-delta surface improved, this kind of device could be developed into a useful fast current switch or even implemented in superconducting digital electronics. We investigated the properties of planar injection devices with (001) YBa2Cu3O7-delta as HTS superconductor, a natural oxide, PTBa2Cu3O7-delta and PrBa2Cu3-xGaxO7-delta barriers with a normal conducting counter electrode. YBa2Cu3O7-delta films used showed an average surface roughness between 1 and 6 nm. The observed current gain for devices with a natural barrier was 6.2 at 40 K and for PBCO and PBCGO barrier less than one between T-c and 10 K.",

keywords = "METIS-130020",

author = "C.W. Schneider and R. Schneider and R. Moerman and G.J. Gerritsma and H. Rogalla",

year = "1997",

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series = "Institute of Physics Conference Series",

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Schneider, CW, Schneider, R, Moerman, R, Gerritsma, GJ & Rogalla, H 1997, Recent progress in developing HTS quasi-particle injection devices. in H Rogalla & DHA Blank (eds), Applied Superconductivity 1997: Proceedings of EUCAS 1997, Third European Conference on Applied Superconductivity, held in the Netherlands, 30 June-3 July 1997. Institute of Physics Conference Series, vol. 158, Institute of Physics (IOP), pp. 437-440, 3rd European Conference on Applied Superconductivity, EUCAS 1997, Veldhoven, Netherlands, 30/06/97.

Recent progress in developing HTS quasi-particle injection devices. / Schneider, C.W.; Schneider, R.; Moerman, R. et al.
Applied Superconductivity 1997: Proceedings of EUCAS 1997, Third European Conference on Applied Superconductivity, held in the Netherlands, 30 June-3 July 1997. ed. / H. Rogalla; D.H.A. Blank. Institute of Physics (IOP), 1997. p. 437-440 (Institute of Physics Conference Series; Vol. 158).

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

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T1 - Recent progress in developing HTS quasi-particle injection devices

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AU - Schneider, R.

AU - Moerman, R.

AU - Gerritsma, G.J.

AU - Rogalla, H.

N1 - Conference code: 3

PY - 1997/12/19

Y1 - 1997/12/19

N2 - In recent years, there was some progress in developing HTS three-terminal devices based on quasi-particles injection with a current gain of up to 10. This is still one order less than already demonstrated for low-T-c junctions. The main obstacle for further progress is the unsolved problem of a suitable HTS barrier which allows for quasi-particle tunneling. If the preparation conditions for barrier materials such as natural YBa2Cu3O7-delta and SrTiO3 can be better controlled, as well as the quality of the YBa2Cu3O7-delta surface improved, this kind of device could be developed into a useful fast current switch or even implemented in superconducting digital electronics. We investigated the properties of planar injection devices with (001) YBa2Cu3O7-delta as HTS superconductor, a natural oxide, PTBa2Cu3O7-delta and PrBa2Cu3-xGaxO7-delta barriers with a normal conducting counter electrode. YBa2Cu3O7-delta films used showed an average surface roughness between 1 and 6 nm. The observed current gain for devices with a natural barrier was 6.2 at 40 K and for PBCO and PBCGO barrier less than one between T-c and 10 K.

AB - In recent years, there was some progress in developing HTS three-terminal devices based on quasi-particles injection with a current gain of up to 10. This is still one order less than already demonstrated for low-T-c junctions. The main obstacle for further progress is the unsolved problem of a suitable HTS barrier which allows for quasi-particle tunneling. If the preparation conditions for barrier materials such as natural YBa2Cu3O7-delta and SrTiO3 can be better controlled, as well as the quality of the YBa2Cu3O7-delta surface improved, this kind of device could be developed into a useful fast current switch or even implemented in superconducting digital electronics. We investigated the properties of planar injection devices with (001) YBa2Cu3O7-delta as HTS superconductor, a natural oxide, PTBa2Cu3O7-delta and PrBa2Cu3-xGaxO7-delta barriers with a normal conducting counter electrode. YBa2Cu3O7-delta films used showed an average surface roughness between 1 and 6 nm. The observed current gain for devices with a natural barrier was 6.2 at 40 K and for PBCO and PBCGO barrier less than one between T-c and 10 K.

KW - METIS-130020

M3 - Conference contribution

SN - 0750304871

T3 - Institute of Physics Conference Series

SP - 437

EP - 440

BT - Applied Superconductivity 1997

A2 - Rogalla, H.

A2 - Blank, D.H.A.

PB - Institute of Physics (IOP)

T2 - 3rd European Conference on Applied Superconductivity, EUCAS 1997

Y2 - 30 June 1997 through 3 July 1997

ER -

Schneider CW, Schneider R, Moerman R, Gerritsma GJ, Rogalla H. Recent progress in developing HTS quasi-particle injection devices. In Rogalla H, Blank DHA, editors, Applied Superconductivity 1997: Proceedings of EUCAS 1997, Third European Conference on Applied Superconductivity, held in the Netherlands, 30 June-3 July 1997. Institute of Physics (IOP). 1997. p. 437-440. (Institute of Physics Conference Series).