Superconducting circuits with π-shift elements


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Andreski, Aleksandar (2011) Superconducting circuits with π-shift elements. thesis.

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Abstract:The topics presented in this thesis can be divided in three, roughly
independent, parts: the Superconducting Network Model (Chapter 2), π-shift RSFQ circuits together with experimental aspects of the YBCO/Nb ramp-type Josephson devices (Chapters 3-4) and static π-shift circuits (Chapters 5-6).

Chapter 2 attempts to formalize a Superconducting Network Model in a
manner that is highly compatible with the methods and tools of standard
microelectronic circuit analysis and design. First, a superconducting network is defined in the
(φ,I) space while later practical aspects in the modeling of
superconducting thin-film circuits are presented.

The next two Chapters focus on π-shift circuits of the RSFQ
family and measurement results obtained from such circuits manufactured in a hybrid YBCO/Nb technology. Additionally, various aspects of
experimentation and fabrication of the circuits are given.

In the last part, Chapter 5, a novel superconducting π-shift
device is proposed. This device exhibits amplifier-like properties in the
magnetic flux domain and can thus be used to build static (level-based) logic
circuits operating with flux signals. Measurements on basic static π-devices are presented in Chapter 6.
Item Type:Thesis
Faculty:
Science and Technology (TNW)
Research Group:
Link to this item:http://purl.utwente.nl/publications/78013
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