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Hybrid semiconducting nanowire devices combining epitaxial superconductor and ferromagnetic insulator layers have been recently explored experimentally as an alternative platform for topological superconductivity at zero applied magnetic…

介观与纳米尺度物理 · 物理学 2021-07-28 Samuel D. Escribano , Elsa Prada , Yuval Oreg , Alfredo Levy Yeyati

The hybrid nanowire consisting of semiconductor with proximity to superconductor is expected to serve as an experimental platform to display Majorana zero modes. By rederiving its effective Kitaev model with spins, we discover a novel…

介观与纳米尺度物理 · 物理学 2025-11-27 Guo-Jian Qiao , Sheng-Wen Li , C. P. Sun

Predictions of topological p-wave superconductivity and Majorana zero modes (MZMs) in hybrid superconductor-semiconductor nanowires have been difficult to realize experimentally. Consequently, researchers are actively exploring alternative…

介观与纳米尺度物理 · 物理学 2025-05-20 Francisco Lobo , Elsa Prada , Pablo San-Jose

We theoretically consider the effect of a spatially periodic modulation of the superconducting order parameter on the formation of Majorana fermions induced by a one-dimensional system with magnetic impurities brought into close proximity…

介观与纳米尺度物理 · 物理学 2016-04-19 Silas Hoffman , Jelena Klinovaja , Daniel Loss

We study a semiconductor wire with strong spin-orbit coupling, which is proximity-coupled to a superconductor with chemical potential disorder. When tunneling at the semiconductor- superconductor interface is very weak, it is known that…

超导电性 · 物理学 2016-11-02 William S. Cole , Jay D. Sau , S. Das Sarma

Theoretical research suggests a emergence of the Majorana bound states at the ends of the nanowires. Experimental verifications of said concept has already been executed, e.g., in superconductor/semiconductor nanowire devices where…

介观与纳米尺度物理 · 物理学 2020-12-01 Aksel Kobiałka , Andrzej Ptok

An interplay between pairing and topological orders has been predicted to give rise to superconducting states supporting exotic emergent particles, such as Majorana particles obeying non-Abelian braid statistics. We consider a system of…

超导电性 · 物理学 2022-08-10 Jonathan Schirmer , C. -X. Liu , J. K. Jain

Topological insulator (TI) nanoribbons with proximity-induced superconductivity are a promising platform for Majorana bound states (MBSs). In this work, we consider a detailed modeling approach for a TI nanoribbon in contact with a…

介观与纳米尺度物理 · 物理学 2023-02-23 Dennis Heffels , Declan Burke , Malcolm R. Connolly , Peter Schüffelgen , Detlev Grützmacher , Kristof Moors

We consider theoretically the physics of bulk topological superconductivity accompanied by boundary non-Abelian Majorana zero modes in semiconductor-superconductor (SM-SC) hybrid systems consisting of finite wires in the presence of…

介观与纳米尺度物理 · 物理学 2023-08-21 Sankar Das Sarma , Jay D. Sau , Tudor D. Stanescu

We study the topological phase diagram of a setup composed of two nanowires with strong Rashba spin-orbit interaction subjected to an external magnetic field and brought into the proximity to a bulk $s$-wave superconductor in the presence…

介观与纳米尺度物理 · 物理学 2019-06-26 Olesia Dmytruk , Manisha Thakurathi , Daniel Loss , Jelena Klinovaja

Epitaxial semiconductor-superconductor hybrid materials are an excellent basis for studying mesoscopic and topological superconductivity, as the semiconductor inherits a hard superconducting gap while retaining tunable carrier density.…

介观与纳米尺度物理 · 物理学 2017-03-10 D. Sherman , J. S. Yodh , S. M. Albrecht , J. Nygård , P. Krogstrup , C. M. Marcus

A minimal model for the hybrid superconductor-semiconductor nanowire Majorana platform is developed that fully captures the effects of the low-energy renormalization of the nanowire modes arising from the presence of the parent…

介观与纳米尺度物理 · 物理学 2017-07-26 Tudor D. Stanescu , Sankar Das Sarma

The edge state of the topological insulator coupled to a superconductor system is able to simulate the Majorana fermion in zero energy mode since the Kitaev-type pairing is induced by exchanging quasi-excitations in electron tunneling.…

介观与纳米尺度物理 · 物理学 2025-06-23 Xin Yue , Guo-Jian Qiao , C. P. Sun

We show that a one-dimensional topological superconductor can be realized in carbon nanotubes, using a relatively small magnetic field. Our analysis relies on the intrinsic curvature-enhanced spin-orbit coupling of the nanotubes, as well as…

介观与纳米尺度物理 · 物理学 2020-07-01 Omri Lesser , Gal Shavit , Yuval Oreg

We study the influence of the inverse proximity effect on the superconductivity nucleation in hybrid structures consisting of the semiconducting nanowires placed in contact with a thin superconducting film and discuss the resulting…

超导电性 · 物理学 2018-04-17 Alexander A. Kopasov , Ivan M. Khaymovich , Alexander S. Mel'nikov

Heterostructures comprised of a magnetic topological insulator (MTI) placed in the proximity of an $s$-wave superconductor have emerged as a platform for the practical realization of Majorana bound states (MBSs). More specifically, it has…

Performing Monte Carlo simulations we study the temperature dependent self--organization of magnetic moments coupled to itinerant electrons in a finite--size one--dimensional nanostructure proximitized to a superconducting reservoir. At low…

介观与纳米尺度物理 · 物理学 2019-07-03 Anna Gorczyca-Goraj , Tadeusz Domanski , Maciej M. Maska

Among the different platforms to engineer Majorana fermions in one-dimensional topological superconductors, topological insulator nanowires remain a promising option. Threading an odd number of flux quanta through these wires induces an odd…

介观与纳米尺度物理 · 物理学 2019-05-22 Fernando de Juan , Jens H. Bardarson , Roni Ilan

Topological superconductivity in quasi-one-dimensional systems is a novel phase of matter with possible implications for quantum computation. Despite years of effort, a definitive signature of this phase in experiments is still debated. A…

介观与纳米尺度物理 · 物理学 2021-07-12 Omri Lesser , Andrew Saydjari , Marie Wesson , Amir Yacoby , Yuval Oreg

A topological insulator nanowire, proximity-coupled to an ordinary bulk s-wave superconductor and subject to a longitudinal applied magnetic field, is shown to realize a one-dimensional topological superconductor with unpaired Majorana…

介观与纳米尺度物理 · 物理学 2011-11-17 A. Cook , M. Franz