Work

Anomalous Josephson Current in Junctions with Spin Polarizing Quantum Point Contacts

Year: 2008

Type: article

Abstract: We consider a ballistic Josephson junction with a quantum point contact in a two-dimensional electron gas with Rashba spin-orbit coupling. The point contact acts as a spin filter when embedded in a circuit with normal electrodes. We show that with an in-plane external magnetic field an anomalous supercurrent appears even for zero phase difference between the superconducting electrodes. In addition, the external field induces large critical current asymmetries between the two flow directions, leading to supercurrent rectifying effects.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.101.107001

Authors: A. A. Reynoso, Gonzalo Usaj, C. A. Balseiro, D. Feinberg, M. Avignon

Institutions: Consejo Nacional de Investigaciones Científicas y Técnicas, Balseiro Institute, Bariloche Atomic Centre, Centre National de la Recherche Scientifique, Université Joseph Fourier, Institut Néel

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2023503324

FWCI: 1.93

Cites: 32

Cited by: 193

Related to: 10