Creating Majorana modes from segmented Fermi surface

Abstract

We present a new platform for creating Majorana bound states from 2D gapless superconducting state in spin-helical systems under the in-plane Zeeman field. Topological 1D channels are formed by quantum confinement of quasiparticles via Andreev reflection from the surrounding fully gapped superconducting region. Our proposal can be realized using narrow strips of magnetic insulators on top of proximitized 3D topological insulators. This setup has key advantages that include: small Zeeman fields, no required fine-tuning of chemical potential, removal of the low-energy detrimental states, and large attainable topological gap.

6+3 pages, 4+1 figures

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Cited by in corpus (18)

• Andreev reflection at the altermagnet-superconductor interface
• Majorana nanowires for topological quantum computation
• Discovery of segmented Fermi surface induced by Cooper pair momentum
• Detecting induced $p\pm ip$ pairing at the Al-InAs interface with a quantum microwave circuit
• Current-enabled optical conductivity of superconductors
• Supercurrent-induced topological phase transitions
• Topological superconductivity in EuS/Au/superconductor heterostructures
• Nonreciprocal superconductivity
• Meissner effect induced Majorana zero modes at small magnetic field
• Signatures of a Spin-Active Interface and Locally Enhanced Zeeman field in a Superconductor-Chiral Material Heterostructure
• Supercurrent-Induced Weyl Superconductivity
• Temperature tuned Fermi surface topology and segmentation in non-centrosymmetric superconductors
• Localization and Topology in Noncentrosymmetric Superconductors with Disorder
• Noise as a probe of Majorana fermion surface states
• Gate-tunable anomalous Hall effect in stacked van der Waals ferromagnetic insulator - topological insulator heterostructures
• Supercurrent effect in a charge density wave intertwined superconductor
• Altermagnetism Induced Bogoliubov Fermi Surfaces Form Topological Superconductivity
• Chirality inversion of Majorana edge modes in a Fu-Kane heterostructure