Quantum transport signatures of chiral edge states in Sr${}_2$RuO${}_4$

Abstract

We investigate transport properties of a double quantum dot based Cooper pair splitter, where the superconducting lead consists of Sr${}_2$RuO${}_4$. The proposed device can be used to explore the symmetry of the superconducting order parameter in Sr${}_2$RuO${}_4$ by testing the presence of gapless chiral edge states, which are predicted to exist if the bulk superconductor is described by a chiral $p$--wave state. The odd orbital symmetry of the bulk order parameter ensures that we can realize a regime where the electrons tunneling into the double dot system come from the chiral edge states and thereby leave their signature in the conductance. The proposed Cooper pair splitter has the potential to probe order parameters in unconventional superconductors.

5 pages

References in corpus (6)

• Coupling of Spin and Orbital Motion of Electrons in Carbon Nanotubes
• Chiral P-Wave Order in Sr_2RuO_4
• Superconducting proximity effect in interacting double-dot systems
• Theory of superconductivity in a three-orbital model of Sr${}_2$RuO${}_4$
• Spin Density Wave Fluctuations and p-wave Pairing in Sr2RuO4
• Chirality sensitive effect on surface states in chiral p-wave superconductors

Cited by in corpus (5)

• Unconventional Superconductivity in Double Quantum Dots
• Detecting nonlocal Cooper pair entanglement by optical Bell inequality violation
• Josephson response of a conventional and a noncentrosymmetric superconductor coupled via a double quantum dot
• Non local quantum state engineering with the Cooper pair splitter beyond the Coulomb blockade regime
• Transport and noise properties of a normal metal-superconductor-normal metal junction with mixed singlet and chiral triplet pairings