Coulomb blockade of Cooper pair tunneling and parity effects in the Cooper pair transistor
2006 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 74, no 22Article in journal (Refereed) Published
We have measured the Cooper pair transistor (CPT) in a tunable electromagnetic environment consisting of four one-dimensional superconducting quantum interference device arrays. The transport properties of the CPT in the high impedance limit, Z(env)> R-Q similar or equal to 6.45 k Omega, are studied for different ratios of the Josephson coupling energy to the charging energy. As the impedance of the environment is increased, the current-voltage characteristic (IVC) of the CPT develops a Coulomb blockade of Cooper pair tunneling and the measured IVCs agree qualitatively with a theory based on quasicharge dynamics for a CPT. Increasing the impedance of the environment induces a transition in the modulation of the IVC with the gate charge from e-periodic to 2e-periodic.
Place, publisher, year, edition, pages
2006. Vol. 74, no 22
IdentifiersURN: urn:nbn:se:kth:diva-24648DOI: 10.1103/PhysRevB.74.224505ISI: 000243195600090ScopusID: 2-s2.0-33845499080OAI: oai:DiVA.org:kth-24648DiVA: diva2:352431
QC 201009212010-09-212010-09-212010-09-28Bibliographically approved