Superconducting Devices and Their Applications: Proceedings of the 4th International Conference SQUID ’91 (Sessions on Superconducting Devices), Berlin, Fed. Rep. of Germany, June 18–21, 1991

Front Matter....Pages I-XV
Front Matter....Pages 1-1
Toward a Technology of Electronic Circuits with High- T c Superconductors....Pages 3-18
Physics of Josephson Junctions Made of High- T c Superconductors....Pages 19-27
Towards Real HTS Tunnel Junctions....Pages 28-31
NS Boundaries and the Proximity Effect in Metal — YBCO Junctions....Pages 32-40
In-Situ YBa 2 Cu 3 O 7 /SrTiO 3 /YBa 2 Cu 3 O 7 a-b Plane Josephson Edge Junctions....Pages 41-44
Fine Structure in the Tunneling Characteristis of Bi-Sr-Ca-Cu-O:Pb....Pages 45-48
Suppression of Magnetic Flux Noise in YBa 2 Cu 3 O 7−x Flux Transformers....Pages 49-56
Anomalous Properties of Weak-Link-Containing Superconductors: Flicker Noise....Pages 57-60
Exotic Manifestations of Intrinsic High- T c Interferometer Loops....Pages 61-65
Percolation and Josephson Effects in High- T c Polycrystalline Thin Films....Pages 66-70
Observation of Magneto-Thermoelectric Effects in High- T c Superconducting Tl 2 Ba 2 CaCu 2 O x Single Crystals....Pages 71-74
Enhancement of the Superconducting Transition Temperature of Y-Ba-Cu-O Thin Films by Silver Over-Layer Deposition....Pages 75-78
High-Temperature Ceramic RF-SQUIDs....Pages 79-86
A Compact High- T c RF-SQUID System with Reduced Tank Circuit Damping....Pages 87-91
High- T c RF-Biased SQUID Magnetometers....Pages 92-96
Performance of BSCCO Thick Film RF-SQUIDs....Pages 97-101
Two-Loop Y-Ba-Cu-O RF-SQUID Magnetometer....Pages 102-105
YBCO/PBCO/YBCO Edge Junctions and DC-SQUIDs....Pages 106-119
Reproducible High- T c SNS Josephson Junctions and DC-SQUIDs....Pages 120-126
High- T c Epitaxial Junctions and DC-SQUIDs....Pages 127-132
Front Matter....Pages 1-1
Multilayer YBa 2 CU 3 O x Structure — An Approach to SQUID Applications....Pages 133-137
DC-SQUID with Step Edge Junctions on (100) SrTiO 3 ....Pages 138-141
YBa 2 Cu 3 O x DC-SQUIDs on Y-ZrO 2 Bicrystals....Pages 142-145
YBCO Thin Films SQUIDs Fabricated on Bicrystal Substrates....Pages 146-149
Sub-Micron YBa 2 Cu 3 O 7−δ Grain Boundary Junction DC-SQUIDs....Pages 150-154
Thin Film BiPbSrCaCuO DC-SQUIDs Operating at 78 K....Pages 155-161
Thin Film High-Temperature Superconducting Flux Transformers Coupled to SQUIDs....Pages 162-167
YBa 2 Cu 3 O 7 −δ Thin Film Flux Transformers Made by Wet Etching....Pages 168-171
Progress Towards an Integrated HTS SQUID Magnetometer....Pages 172-179
Light Detection Using High- T c Microstrip Lines....Pages 180-185
The Superconducting Flux Flow Transistor: Models and Applications....Pages 186-191
Preliminary Studies of HTS Far-Infrared Micro-Bolometers....Pages 192-195
Current Injected Thick Film HTS Magnetic Sensors....Pages 196-199
Front Matter....Pages 201-201
Comparative Study on Two All-Refractory Josephson Tunnel Junctions: Nb/AlO x /NB and Nb/NbN/MgO/NbN/Nb....Pages 203-207
Preparation and Characteristics of Full-Epitaxial NbC x N 1−x /MgO/NbC x N 1−x Josephon Tunnel Junctions....Pages 208-213
Lead/Bismuth- and Niobium-Based SIN Tunnel Junctions....Pages 214-217
Relation Between Tunnel Junction Quality, Anodization Profiles, and Low-Frequency Noise....Pages 218-223
Submicron Sized, High Current Density Nb/PbBi Window Tunnel Junctions....Pages 224-227
Barrier-Properties of All-Niobium Tunnel Junctions....Pages 228-232
Fabrication and Performances of NbZr/Oxide/NbZr Thin Film Josephson Junctions....Pages 233-236
Front Matter....Pages 201-201
Some Aspects in the Tunneling Behavior of Photosensitive Junctions....Pages 237-239
Construction and Performance of Wire-Junction RF-SQUIDs....Pages 240-243
Self-Consistent Theory of the Voltage-Current Characteristic and Intrinsic Noise of the Hysteretic RF-SQUID....Pages 244-247
An Analysis of Non-Linear Behaviour in the Radio Frequency SQUID Magnetometer....Pages 248-251
Low Noise UHF Thin Film SQUID with Cryogenic HEMT Preamplifier....Pages 252-255
Design and Fabrication Considerations for Extending Integrated DC-SQUIDs to the Deep Sub-Micron Regime....Pages 256-264
Nb-AlO x -Nb SNAP Technology for 125 mm Wafers Developed in Partnership with Silicon Technology....Pages 265-270
DC-SQUIDs Fabricated with Nb/Al-oxide/Nb Tunnel Junctions....Pages 271-275
A Compact Very Low Noise DC-SQUID Magnetometer....Pages 276-280
A Low Noise DC-SQUID Based on Nb/Al-AlO x /Nb Josephson Junctions....Pages 281-285
DC-SQUID with Aluminium Microbridges far from T c ....Pages 286-291
Accurate Determination of the Electrical Parameters of Thin Film SQUID Structures and Simulation of DC-SQUIDs with Coupling Coils....Pages 292-296
RF Properties of a DC-SQUID Coupled to a Multiturn Input Coil....Pages 297-300
Resonances in All-Niobium DC-SQUIDs....Pages 301-306
Noise in All-Niobium DC-SQUIDs....Pages 307-311
Noise Measurements on DC-SQUIDs with Varied Design....Pages 312-316
Noise Properties of NbN-MgO-NbN SQUIDs....Pages 317-320
Noise Studies of Uncoupled DC-SQUIDs....Pages 321-325
The Laser Switch in SQUID Measurements: Fundamental Experiments and Low Frequency Noise Reduction....Pages 326-336
A New DC-SQUID System with 2f-Demodulation....Pages 337-340
Front Matter....Pages 201-201
Relaxation Oscillating SQUIDs Using Nb/AlO x /Nb Josephson Tunnel Junctions....Pages 341-345
DC-SQUID Electronics Based on Adaptive Noise Cancellation and a High Open-Loop Gain Controller....Pages 346-350
Investigation of a Double-Loop DC-SQUID Magnetometer with Additional Positive Feedback....Pages 351-356
Switching Probability and Performance in Single-Chip SQUIDs....Pages 357-361
Digital CMOS Circuits Below 100 K....Pages 362-365
Front Matter....Pages 367-367
Fluxons in Josephson Transmission Lines....Pages 369-375
Phase Locking in Long Josephson Junctions....Pages 376-384
Soliton Chains in Annular Josephson Junctions: Experiments....Pages 385-388
Coupled Josephson Soliton Oscillators....Pages 389-394
A 500 GHz Quasi-Optical Slot Antenna SIS Mixer....Pages 395-398
Numerical and Experimental Results on Josephson Junctions Irradiated by a Biharmonic Drive....Pages 399-402
Phaselocked States in Josephson Junction Resonator Systems....Pages 403-406
Microwave Properties of Josephson Junctions Strongly Coupled to Microstrip Resonators....Pages 407-410
Multiloop Integrated DC-SQUID Low Noise RF Amplifiers....Pages 411-414
Subharmonic Pumping and Noise Properites of the Josephson Parametric Amplifier....Pages 415-418
Imaging of Self-Resonant and RF-Induced States in Josephson Junctions....Pages 419-429
1 V and 10 V Josephson Voltage Standards....Pages 430-441
Ratio Standard for DC Resistance Using a Second Generation of Josephson Junction Arrays....Pages 442-445
Superconducting Instrumentation for Precision Measurement and Control....Pages 446-450
Use of a Resistive SQUID for Noise Thermometry....Pages 451-459
Front Matter....Pages 367-367
Analysis of a Josephson Junction Noise Thermometer with a DC-SQUID Preamplifier....Pages 460-465
Review on Superconducting Tunnel Junctions as Ionizing-Radiation Detectors....Pages 466-473
Particle Detection with Superconducting Tunnel Junctions—Modelling the Non-Equilibrium State Generated by Particle Interactions....Pages 474-481
A Calorimetric Particle Detector Using a SQUID Monitored Transition Edge Thermometer....Pages 482-486
Multichannel Instrumentation for Biomagnetism....Pages 487-501
Design and Operation of a Biomagnetic Multichannel System....Pages 502-510
Biomagnetic Multi-Channel System Consisting of Several Self-Contained Autonomous Small-Size Units....Pages 511-516
A Modular 19-Channel SQUID System for Biomagnetic Measurements....Pages 517-520
On the SQUID-Modules for the UT Multichannel Neuromagnetometer....Pages 521-524
11-Channel Multipurpose Biomagnetic System for Operation in Unshielded Environment....Pages 525-528
A New Method of Adjusting Bias Currents of Neuromagnetometers....Pages 529-532
Active Shield with SQUID for Biomagnetic Measurement....Pages 533-536
Active Magnetic Shielding Support for Biomagnetic Instruments....Pages 537-541
Performance of an Electronic Gradiometer in Noisy Environments....Pages 542-546
Gradiometer Response Analysis for Current Multipole Sources....Pages 547-550
Analyzing Multichannel Magnetometer Data....Pages 551-556
Measurements on Magnetic Samples with a DC-SQUID Working at mK Temperatures in Magnetic Fields up to 6 mT....Pages 557-561
A Miniature DC-SQUID Magnetometer with Current Injection Feedback....Pages 562-566
The DC-SQUID Amplifier for the NAUTILUS Gravitational Wave Detector at CERN: Preliminary Measurements....Pages 567-571
An Improved System for the Nondestructive Evaluation of Steel....Pages 572-575
Front Matter....Pages 367-367
Improved Techniques for Structural NDT Using SQUIDs....Pages 576-580
Application of DC-SQUID Magnetometers for Nondestructive Testing of Multilayer Electronic Cards....Pages 581-583
Characterization of Normal/Superconducting Interfaces: A Novel Technique....Pages 584-587
Transistor Action in Three-Terminal Structures Having Nb Electrodes on an Insulating SrTiO 3 Substrate....Pages 588-592
Front Matter....Pages 593-593
Summary and Conclusions....Pages 595-600
Back Matter....Pages 601-604