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

Conference · Tue Sep 01 00:00:00 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: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 7155591
• Report Number(s): LBL-32901; CONF-930150-1; ON: DE93002625
• Resource Relation: Conference: Optical Society of America (OSA) meeting on ultrafast optics and optoelectronics, San Francisco, CA (United States), 25-27 Jan 1993
• Country of Publication: United States
• Language: English

Related Subjects

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