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 Dots — Björn Sothmann1, •Stephan Weiss2, Michele Governale3, and Jürgen König2 — 1Departement 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).