Photon-assisted Tunneling In Double-barrier Superconducting Tunnel-junctions

M. M. T. M. Dierichs; P. Dieleman; J. J. Wezelman; C. E. Honingh; T. M. Klapwijk

doi:10.1063/1.110996

Photon-assisted Tunneling In Double-barrier Superconducting Tunnel-junctions

M. M. T. M. Dierichs, P. Dieleman, J. J. Wezelman, C. E. Honingh, T. M. Klapwijk

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Double-barrier Nb/Al2O3/Al/Al2O3/Nb tunnel junctions are used as mixing elements in a 345 GHz waveguide mixer. Noise temperatures (double side band) down to 720 K at 3.0 K are obtained without the need to apply a magnetic field to suppress the Josephson current. It is shown that the composite barrier acts as a single barrier for photon-assisted tunneling. Surprisingly, at these frequencies the capacitance of two stacked tunnel barriers is only determined by one barrier.

Originele taal-2	English
Pagina's (van-tot)	921-923
Aantal pagina's	3
Tijdschrift	Applied Physics Letters
Volume	64
Nummer van het tijdschrift	7
DOI's	https://doi.org/10.1063/1.110996
Status	Published - 14-feb.-1994

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10.1063/1.110996

Photon‐assisted tunneling in double‐barrier superconducting tunnel junctionsFinal publisher's version, 525 KBLicentie: Unspecified

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title = "Photon-assisted Tunneling In Double-barrier Superconducting Tunnel-junctions",

abstract = "Double-barrier Nb/Al2O3/Al/Al2O3/Nb tunnel junctions are used as mixing elements in a 345 GHz waveguide mixer. Noise temperatures (double side band) down to 720 K at 3.0 K are obtained without the need to apply a magnetic field to suppress the Josephson current. It is shown that the composite barrier acts as a single barrier for photon-assisted tunneling. Surprisingly, at these frequencies the capacitance of two stacked tunnel barriers is only determined by one barrier.",

author = "Dierichs, {M. M. T. M.} and P. Dieleman and Wezelman, {J. J.} and Honingh, {C. E.} and Klapwijk, {T. M.}",

year = "1994",

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AU - Dierichs, M. M. T. M.

AU - Dieleman, P.

AU - Wezelman, J. J.

AU - Honingh, C. E.

AU - Klapwijk, T. M.

PY - 1994/2/14

Y1 - 1994/2/14

N2 - Double-barrier Nb/Al2O3/Al/Al2O3/Nb tunnel junctions are used as mixing elements in a 345 GHz waveguide mixer. Noise temperatures (double side band) down to 720 K at 3.0 K are obtained without the need to apply a magnetic field to suppress the Josephson current. It is shown that the composite barrier acts as a single barrier for photon-assisted tunneling. Surprisingly, at these frequencies the capacitance of two stacked tunnel barriers is only determined by one barrier.

AB - Double-barrier Nb/Al2O3/Al/Al2O3/Nb tunnel junctions are used as mixing elements in a 345 GHz waveguide mixer. Noise temperatures (double side band) down to 720 K at 3.0 K are obtained without the need to apply a magnetic field to suppress the Josephson current. It is shown that the composite barrier acts as a single barrier for photon-assisted tunneling. Surprisingly, at these frequencies the capacitance of two stacked tunnel barriers is only determined by one barrier.

U2 - 10.1063/1.110996

DO - 10.1063/1.110996

M3 - Article

SN - 0003-6951

VL - 64

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