Response of a Nb/Al[sub 2]O[sub 3]/Nb tunnel junction to picosecond electrical pulses

Conference · Tue Sep 01 04:00:00 EDT 1992

OSTI ID:7155591

Karadi, C; Verghese, S; Mears, C A; Orenstein, J O; Richards, P L ^[1]; Barfknecht, A T ^[2]

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1. Lawrence Berkeley Lab., CA (United States)
2. Conductus, Inc., Sunnyvale, CA (United States)

Picosecond electrical pulses were used to measure the broadband quasiparticle response of a Nb trilayer SIS (superconductor-insulator-superconductor) junction in both the linear and nonlinear regimes. The electrical pulses were generated by illuminating a Si photoconducting switch using a Ti-sapphire laser. The SIS response is inferred by measuring the dc current induced by interfering two electrical pulses at the junction, as a function of the time delay between them. Results are obtained for bias voltages of 1.0 and 2.0 mV; at the latter, two-photon absorption was detected.

• Research Organization: Lawrence Berkeley Lab., CA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 7155591
• Report Number(s): LBL-32901; CONF-930150--1; ON: DE93002625
• Country of Publication: United States
• Language: English

Related Subjects

665400* -- Quantum Physics Aspects of Condensed Matter-- (1992-)
665412 -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BOSONS
CHALCOGENIDES
CORRELATIONS
CURRENTS
ELECTRIC CURRENTS
ELEMENTARY PARTICLES
ELEMENTS
FUNCTIONS
JUNCTIONS
MASSLESS PARTICLES
METALS
NIOBIUM
OXIDES
OXYGEN COMPOUNDS
PHOTONS
PULSES
QUASI PARTICLES
RESPONSE FUNCTIONS
SORPTION
SUPERCONDUCTING JUNCTIONS
TIME DEPENDENCE
TRANSITION ELEMENTS
TUNNEL EFFECT