Stacked Josephson junction SQUID

Details Stacked Josephson junction SQUID Stacked Josephson junction SQUID

2001-09-21

arxiv.org/abs/cond-mat/0109408v1

Physica C 368 (2002) 246-250

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures, presented at SQUID-2001 (Stenungsbaden September 2001)

Scientific paper

10.1016/S0921-4534(01)01175-3

Operation of a Superconducting Quantum Interference Device (SQUID) made of stacked Josephson junctions is analyzed numerically for a variety of junction parameters. Due to a magnetic coupling of junctions in the stack, such a SQUID has certain advantages as compared to an uncoupled multi-junction SQUID. Namely, metastability of current-flux modulation can be reduced and a voltage-flux modulation can be improved if junctions in the stack are phase-locked. Optimum operation of the SQUID is expected for moderately long, strongly coupled stacked Josephson junctions. A possibility of making a stacked Josephson junction SQUID based on intrinsic Josephson junctions in high-Tc superconductor is discussed.

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