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Berlin 2015 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 89: Transport: Quantum Dots, Quantum Wires, Point Contacts 1 (jointly with HL)

TT 89.3: Talk

Thursday, March 19, 2015, 11:30–11:45, A 053

Unconventional Superconductivity in Double Quantum DotsBjörn Sothmann1, •Stephan Weiss2, Michele Governale3, and Jürgen König21Departement de Physique Theorique, Universite de Geneve, CH-1211 Geneve 4, Switzerland — 2Theoretische Physik, Universität Duisburg-Essen and CENIDE, 47048 Duisburg, Germany — 3School of Physical and Chemical Sciences, Victoria University of Wellington, New Zealand

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 [1]. We propose two detection schemes for unconventional superconductivity, based on either Josephson or Andreev spectroscopy.

[1] B. Sothmann, S. Weiss, M. Governale, and J. König,

Phys. Rev. B 90, 220501(R) (2014).

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