Tunneling spectroscopy of topological superconductors

Abstract

Tunneling conductance spectra of normal metal/insulator/superconductor (N/I/S) junctions are calculated to determine the potential of tunneling spectroscopy in investigations of topological superconductivity. Peculiar feature of topological superconductors is the formation of gapless edge states in them. Since the conductance of N/I/S junctions is sensitive to the formation of these edge states, topological superconductivity can be identified through edge-state detection. Herein, the effects of Fermi surface anisotropy and an applied magnetic field on the conductance spectra are analyzed to gather indications that can help to identify the topological nature of actual materials.

17pages, 1 table, 6 figures, submitted to Physica E

References in corpus (14)

• Non-Abelian Anyons and Topological Quantum Computation
• New directions in the pursuit of Majorana fermions in solid state systems
• Topological Superconductivity in CuxBi2Se3
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• Evaluation of Spin-Triplet Superconductivity in Sr2RuO4
• Topological spin-current in non-centrosymmetric superconductors
• Topological properties of spin-triplet superconductors and the Fermi surface topology in the normal state
• Types of topological surface states in nodal noncentrosymmetric superconductors
• Surface density of states and topological edge states in non-centrosymmetric superconductors
• Andreev bound states and tunneling characteristics of a non-centrosymmetric superconductor
• Observation of Andreev bound state and multiple energy gaps in the non-centrosymmetric superconductor BiPd
• Andreev spectroscopy and surface density of states for a three-dimensional time-reversal invariant topological superconductor
• Theory of tunneling spectroscopy for chiral topological superconductors
• Topological invariants of time reversal invariant superconductors

Cited by in corpus (16)

• Observation of superconductivity in 3D Dirac semimetal Cd3As2 crystal
• Tip induced unconventional superconductivity on Weyl semimetal TaAs
• Superconductivity in topologically nontrivial material Au2Pb
• Observation of triplet superconductivity in CoSi${}_2$/TiSi${}_2$ heterostructures
• Transport signatures of superconducting hybrids with mixed singlet and chiral triplet states
• Influence of the impurity scattering on charge transport in unconventional superconductor junctions
• Transport evidence for three dimensional topological superconductivity in doped $\beta$-PdBi${}_2$
• Subgap states in two dimensional spectroscopy of unconventional superconductors using graphene
• Enhanced superconductivity at the interface of W/Sr${}_2$RuO${}_4$ point contact
• Theory of tunneling conductance of anomalous Rashba metal / superconductor junctions
• Probing chiral superconductivity in Sr${}_2$RuO${}_4$ underneath the surface by point contact measurements
• Accessing topological superconductivity via a combined STM and renormalization group analysis
• Tunneling conductance in superconducting junctions with $p$-wave unconventional magnets breaking time-reversal symmetry
• Unusual Superconducting Proximity Effect in Magnetically Doped Topological Josephson Junctions
• Andreev spectroscopy of the triplet superconductivity state in Bi/Ni bilayer system
• Broken time-reversal symmetry detected by tunneling spectroscopy of superconducting Pd-doped CaAgP