Abstract
We have investigated the Josephson inductance LJ of a superconducting Cooper pair transistor (SCPT). We traced the inductance using microwave reflection measurements on a tuned resonance circuit in which a SCPT was mounted in parallel to a ∼200 pH strip line inductance. When the inverse of the Josephson inductance, determined on the charge-phase bias plane for a SCPT with a Josephson to Coulomb energy ratio of EJ/EC=1.75, is integrated over the phase, we obtain a current-phase relation, which is strongly nonsinusoidal near the charge degeneracy point.
| Original language | English |
|---|---|
| Article number | 144520 |
| Pages (from-to) | 1-5 |
| Number of pages | 5 |
| Journal | Physical Review B |
| Volume | 80 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 2009 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- arrays
- electrometer
- parity-induced suppression
- quantum-state