Tilt-induced anomalous thermal transport in normal/superconducting borophane junctions
arXiv:1901.11114 · doi:10.1088/2053-1591/ab3f79
Abstract
We study charge and heat transport in normal-metal/superconductor (NS) hybrid junction, based on a tilted anisotropic Dirac material. Using the extended Blonder-Tinkham-Klapwijk formalism, the conductance spectra of NS borophane, a two-dimensional Dirac semimetal with two tilted anisotropic Dirac cones in its dispersion, is investigated. Completely different from the usual normal-metal-superconductor junctions, in spite of the large mismatch in Fermi wavevectores of the normal-metal and superconductor sides of the borophane NS junction, the electron-hole conversion happens with unit probability at normal incidences. Furthermore, we demonstrate that in the heavily doped superconducting regime for heavily doped normal borophane, the electron-hole conversion happens with unit probability, approximately at any incident angle. The dependence of the Andreev with Fermi energy and bias voltage, enable us, selecting the retroconfiguration or specular configuration in types of Andreev reflection processes. We numerically establish an anomalous behavior of thermal conductance in borophane. The tilting of the Dirac cones gives rise to an anomalous behaviour in the thermal conductance of the NS hybrid junction of borophane, such that the thermal conductance decreases by increasing the temperature. Our findings will have potential applications for transport and energy control in superconducting quantum interference devices and hybridized mesoscopic systems.
arXiv comment10 pages, 10 figures
References in corpus (30)
- Spintronics: Fundamentals and applications
- Energy gaps, topological insulator state and zero-field quantum Hall effect in graphene by strain engineering
- Graphene Spintronics
- A tight-binding approach to uniaxial strain in graphene
- All-graphene integrated circuits via strain engineering
- Phosphorene nanoribbons, nanotubes and van der Waals multilayers
- Local defects and ferromagnetism in graphene layers
- Diluted Graphene Antiferromagnet
- Electrically controllable surface magnetism on the surface of topological insulator
- RKKY Interaction in Graphene from Lattice Green's Function
- Ordering of magnetic impurities and tunable electronic properties of topological insulators
- Twisted exchange interaction between localized spins embedded in a one- or two-dimensional electron gas with Rashba spin-orbit coupling
- Phosphorene nanoribbons
- A disordered RKKY lattice mean field theory for ferromagnetism in diluted magnetic semiconductors
- RKKY interaction in carbon nanotubes and graphene nanoribbons
- Ruderman-Kittel-Kasuya-Yosida interaction in Weyl semimetals
- An Analytic Study of Strain Engineering the Electronic Bandgap in Single-Layer Black Phosphorus
- Transition Metal and Vacancy Defect Complexes in Phosphorene: A Spintronic Perspective
- Indirect exchange interaction between magnetic adatoms in a monolayer MoS2
- Topological phase and edge states dependence of the RKKY interaction in zigzag silicene nanoribbon
- Effect of Rashba splitting on RKKY interaction in topological insulator thin films
- Antiferromagnetic nuclear spin helix and topological superconductivity in C nanotubes
- Strongly anisotropic RKKY interaction in monolayer black phosphorus
- Ruderman-Kittel-Kasuya-Yosida interaction in biased bilayer graphene
- Effect of Uniaxial Strain on Ferromagnetic Instability and Formation of Localized Magnetic States on Adatoms in Graphene
- Anisotropic RKKY interaction in spin polarized graphene
- Impurity scattering on the surface of topological insulator thin films
- Strain-induced modulation of magnetic interactions in graphene
- Exchange interaction of magnetic impurities in biased bilayer phosphorene nanoribbon
- Pseudospin Electronics in Phosphorene Nanoribbons