Phase-Charge duality of a Josephson junction in a fluctuating electromagnetic environment
2006 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 97, no 9Article in journal (Refereed) Published
We have measured the current-voltage characteristics of a single Josephson junction placed in a high impedance environment. The transfer of Cooper pairs through the junction is governed by overdamped quasicharge dynamics, leading to Coulomb blockade and Bloch oscillations. Exact duality exists to the standard overdamped phase dynamics of a Josephson junction, resulting in a dual shape of the current-voltage characteristic, with current and voltage changing roles. We demonstrate this duality with experiments which allow for a quantitative comparison with a theory that includes the effect of fluctuations due to the finite temperature of the electromagnetic environment.
Place, publisher, year, edition, pages
2006. Vol. 97, no 9
IdentifiersURN: urn:nbn:se:kth:diva-5830DOI: 10.1103/PhysRevLett.97.096802ISI: 000240239000046ScopusID: 2-s2.0-33748645370OAI: oai:DiVA.org:kth-5830DiVA: diva2:10341
QC 201009202006-05-302006-05-302012-03-20Bibliographically approved