Change search
ReferencesLink to record
Permanent link

Direct link
A Study of Josephson Junction Characteristics.
KTH, School of Engineering Sciences (SCI), Theoretical Physics.
KTH, School of Engineering Sciences (SCI), Theoretical Physics.
2011 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

This Bachelor thesis has as its aim to investigate Josephson junctions by examining

their I-V characteristics and to visualize various phenomena associated with Josephson

junctions. Primarily, everything considered in this thesis uses a semi-classical model

where quantum eects have been excluded. The thesis focuses on 1D arrays of Josephson

junctions fed with direct current with the goal to study what occurs when many junctions

are placed in a row. First a single Josephson junction is simulated and we observe a

hysteresis in the I-V characteristics that is examined. Secondly a 1-D array is considered

and the coupled system of dierential equations that follows is solved numerically, and

from this data the properties of Josephson junctions are deduced. We discovered that this

array generally has similar properties to a single Josephson junction. We also sought to

replicate results obtained experimentally in the lab by David Haviland and his co-workers

at KTH, but by simulations, to see how good our models are. We have produced data

agreeing partly with the experimental results and we have had no directly contradicting

outcomes from our simulations. An explicit relation between the number of Josephson

junctions and the feature of the I-V characteristics was derived and the validity of our

model was strengthened by the consistency of our results.

Place, publisher, year, edition, pages
2011. , 29 p.
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-103461OAI: diva2:560204
Available from: 2012-10-12 Created: 2012-10-12 Last updated: 2012-11-21Bibliographically approved

Open Access in DiVA

Björn Ahlgren, David Bystsröm kandidatex(894 kB)1302 downloads
File information
File name FULLTEXT01.pdfFile size 894 kBChecksum SHA-512
Type fulltextMimetype application/pdf

By organisation
Theoretical Physics
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 1302 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 146 hits
ReferencesLink to record
Permanent link

Direct link