Work

Unconventional superconductivity in double quantum dots

Year: 2014

Type: article

Abstract: The formation of electron pairs is a prerequisite of superconductivity. The fermionic nature of electrons yields four classes of superconducting correlations with definite symmetry in spin, space, and time. Here, we suggest double quantum dots coupled to conventional $s$-wave superconductors in the presence of inhomogeneous magnetic fields as a model system exhibiting unconventional pairing. Due to their small number of degrees of freedom, tunable by gate voltages, quantum-dot systems are ideal to gain fundamental insight into unconventional pairing. We propose two detection schemes for unconventional superconductivity, based on either Josephson or Andreev spectroscopy.

Source: Physical Review B

DOI: 10.1103/physrevb.90.220501

Authors: Björn Sothmann, Stephan Weiss, Michele Governale, Jürgen König

Institutions: University of Geneva, University of Duisburg-Essen, Victoria University of Wellington, MacDiarmid Institute for Advanced Materials and Nanotechnology

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

Funders: Deutsche Forschungsgemeinschaft, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

Award: G8448972297