Transport signatures of inverted Andreev bands in topological Josephson junctions
arXiv:2501.01307 · doi:10.1103/PhysRevB.111.184518
Abstract
We study the thermoelectrical transport transverse to conventional and topological Josephson junctions with a central quantum dot (QD). For that purpose, we derive an effective resonant tunneling model where the QD is renormalized with an induced superconducting gap. By applying the Keldysh Green's function technique, we compute the local density of states as well as the transmission functions. In the latter case, we observe that the Andreev bound states forming on the QD are inverted if the junction has -wave symmetry, meaning that electron and hole orbitals switch roles. We calculate the thermoelectric transport coefficients both analytically and numerically and show how the induced gaps and the band inversion are reflected in the electrical and heat conductance as well as the Seebeck coefficient, the latter experiencing a sign change in the topological case.
arXiv comment13 pages, 7 figures; content corresponds to the published version
References in corpus (28)
- Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
- Unpaired Majorana fermions in quantum wires
- Topological Insulators with Inversion Symmetry
- Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
- Helical liquids and Majorana bound states in quantum wires
- Majorana bound states in a coupled quantum-dot hybrid-nanowire system
- Majorana Fermion Induced Resonant Andreev Reflection
- Fundamental aspects of steady-state conversion of heat to work at the nanoscale
- Hamiltonian approach to the transport properties of superconducting quantum point contacts
- Tunneling characteristic of a chain of Majorana bound states
- Non-Abelian quantum order in spin-orbit-coupled semiconductors: The search for topological Majorana particles in solid state systems
- Josephson and Andreev transport through quantum dots
- Reproducing topological properties with quasi-Majorana states
- Majorana bound states in non-homogeneous semiconductor nanowires
- Two terminal charge tunneling: Disentangling Majorana zero modes from partially separated Andreev bound states in semiconductor-superconductor heterostructures
- Non-Majorana states yield nearly quantized conductance in superconductor-semiconductor nanowire devices
- Josephson radiation from gapless Andreev bound states in HgTe-based topological junctions
- Low-energy theory of transport in Majorana wire junctions
- Thermoelectrical detection of Majorana states
- Signatures of topological Josephson junctions
- Helical Andreev bound states and superconducting Klein tunneling in topological insulator Josephson junctions
- Fractional Josephson Effect with and without Majorana Zero Modes
- Fingerprint of topological Andreev bound states in phase-dependent heat transport
- Thermopower of three-terminal topological superconducting systems
- Thermoelectric-induced unitary Cooper pair splitting efficiency
- Topological Josephson Heat Engine
- Fermi liquid approach for superconducting Kondo problems
- Majorana-mediated thermoelectric transport in multiterminal junctions