Measurement of the current-phase relation of superconducting atomic contacts

Abstract

We have probed the current-phase relation of an atomic contact placed with a tunnel junction in a small superconducting loop. The measurements are in quantitative agreement with the predictions of a resistively shunted SQUID model in which the Josephson coupling of the contact is calculated using the independently determined transmissions of its conduction channels.

arXiv commentto be published in Physical Review Letters

References in corpus (7)

• Manipulating the Quantum State of an Electrical Circuit
• Quantum properties of atomic-sized conductors
• Bipolar supercurrent in graphene
• Josephson Junction Arrays with Bose-Einstein Condensates
• Hamiltonian approach to the transport properties of superconducting quantum point contacts
• Tunable Supercurrent Through Semiconductor Nanowires
• AC JOSEPHSON EFFECT IN A SINGLE QUANTUM CHANNEL

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