Spontaneous generation of flux in a Josephson junction loop

Ras Carmi, Emil Polturak and Gad Koren
Additional contact information
Ras Carmi: Technion-Israel Institute of Technology, Physics Department
Emil Polturak: Technion-Israel Institute of Technology, Physics Department
Gad Koren: Technion-Israel Institute of Technology, Physics Department

A chapter in Macroscopic Quantum Coherence and Quantum Computing, 2001, pp 443-448 from Springer

Abstract: Abstract We report experimental measurements of flux generated spontaneously inside a YBa2Cu3O7-δ superconducting loop made of 214 Josephson junctions connected in series. The flux is generated spontaneously during cooldown from the normal into the superconducting state. Stable random values of the flux measured at the end of each cooldown follow a normal distribution. The data are consistent with the total phase difference around the loop being a sum of the instantaneous values of the fluctuating phase differences across each junction. This agreement is conditional upon the assumption that the phase can be unambiguously defined relative to a phase standard. Our result indicates that topologically equivalent circuits will always contain random flux in their initial state.

Keywords: Phase Difference; Josephson Junction; Topological Charge; YBCO Film; Spontaneous Generation (search for similar items in EconPapers)
Date: 2001
References: Add references at CitEc
Citations:

There are no downloads for this item, see the EconPapers FAQ for hints about obtaining it.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-1-4615-1245-5_44

Ordering information: This item can be ordered from
http://www.springer.com/9781461512455

DOI: 10.1007/978-1-4615-1245-5_44

Access Statistics for this chapter

More chapters in Springer Books from Springer
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().