Theory of Caroli–de Gennes–Matricon analogs in full-shell hybrid nanowires

San-José, Pablo; Payá, Carlos; Marcus, C. M.; Vaitiekėnas, S.; Prada, Elsa

doi:10.1103/physrevb.107.155423

Cited by 8 publications

(2 citation statements)

References 59 publications

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“…More specifically, the angular momentum from the external magnetic field is not overpowered by the corner localization. Therefore the theory for cylindrical nanowires may often be in qualitative agreement with experimental results from hexagonal wires [51]. Note, however, that the angular momentum is not conserved for the hexagonal case so the oscillations are not strictly periodic [69,70].…”

Section: Effects Of Polygonal Cross-section Geometrysupporting

confidence: 59%

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Flux-periodic oscillations in proximitized core–shell nanowires

et al. 2023

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Flux-periodic oscillations of the superconducting gap in proximitized core-shell nanowires are explored. Periodicity of oscillations in the energy spectrum of a cylindrical nanowire is compared with nanowires having hexagonal and square cross-section geometry, along with the eﬀects of Zeeman and Rashba spin-orbit interaction. A transition between h/e and h/2e periodicity is found and shown to be dependent on the chemical potential, with correspondence to degeneracy points of the angular momentum quantum number. For a thin shell of a square nanowire, solely h/e periodicity is found in the inﬁnite wire spectrum and shown to result from energy separation between the lowest groups of excited states.

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Section: Effects Of Polygonal Cross-section Geometrysupporting

confidence: 59%

“…The Little-Park effect is attributed to supercurrents induced within the walls of a thin superconducting cylinder [51]. The expression for the supercurrent in the semi-classical Ginzburg-Landau theory is the following [52],…”

Section: Flux-periodic Oscillationsmentioning

confidence: 99%

Flux-periodic oscillations in proximitized core–shell nanowires

et al. 2023

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Subgap States in Semiconductor-Superconductor Devices for Quantum Technologies: Andreev Qubits and Minimal Majorana Chains

Seoane Souto,

Aguado

2024

Lecture Notes in Physics

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Single-electron charge transfer into putative Majorana and trivial modes in individual vortices

Ge¹,

Bastiaans²,

Chatzopoulos³

et al. 2023

Nat Commun

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Majorana bound states are putative collective excitations in solids that exhibit the self-conjugate property of Majorana fermions—they are their own antiparticles. In iron-based superconductors, zero-energy states in vortices have been reported as potential Majorana bound states, but the evidence remains controversial. Here, we use scanning tunneling noise spectroscopy to study the tunneling process into vortex bound states in the conventional superconductor NbSe2, and in the putative Majorana platform FeTe0.55Se0.45. We find that tunneling into vortex bound states in both cases exhibits charge transfer of a single electron charge. Our data for the zero-energy bound states in FeTe0.55Se0.45 exclude the possibility of Yu–Shiba–Rusinov states and are consistent with both Majorana bound states and trivial vortex bound states. Our results open an avenue for investigating the exotic states in vortex cores and for future Majorana devices, although further theoretical investigations involving charge dynamics and superconducting tips are necessary.

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Theory of Caroli–de Gennes–Matricon analogs in full-shell hybrid nanowires

Cited by 8 publications

References 59 publications

Flux-periodic oscillations in proximitized core–shell nanowires

Flux-periodic oscillations in proximitized core–shell nanowires

Subgap States in Semiconductor-Superconductor Devices for Quantum Technologies: Andreev Qubits and Minimal Majorana Chains

Single-electron charge transfer into putative Majorana and trivial modes in individual vortices

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