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Interplay between superconductivity, spin-orbit coupling and magnetic field can lead to realisation of the topologically non--trivial states which in finite one dimensional nanowires are manifested by emergence of a pair of zero-energy…

介观与纳米尺度物理 · 物理学 2019-09-11 Aksel Kobiałka , Tadeusz Domański , Andrzej Ptok

A pair of counter-propagating Majorana edge modes appears in chiral p-wave superconductors and in other superconducting systems belonging to the same universality class. These modes can be described by an Ising conformal field theory. We…

介观与纳米尺度物理 · 物理学 2013-07-09 Chang-Yu Hou , Fabian Hassler , Anton R. Akhmerov , Johan Nilsson

We investigate the Majorana fermions in a semiconductor nanostructure with two wires connected through a ring. The nanostructure is mirror symmetric and in the proximity of a superconductor. The Rashba spin-orbit coupling and a magnetic…

介观与纳米尺度物理 · 物理学 2014-08-01 B. Y. Sun , M. W. Wu

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

We study multiband semiconducting nanowires proximity-coupled with an s-wave superconductor. We show that when odd number of subbands are occupied the system realizes non-trivial topological state supporting Majorana modes localized at the…

超导电性 · 物理学 2011-03-31 Roman M. Lutchyn , Tudor Stanescu , S. Das Sarma

We study multiband semiconducting nanowires proximity-coupled with an s-wave superconductor and calculate the topological phase diagram as a function of the chemical potential and magnetic field. The non-trivial topological state…

超导电性 · 物理学 2015-03-19 Tudor Stanescu , Roman M. Lutchyn , S. Das Sarma

Topological superconductors are believed to host exotic quasiparticle excitations known as Majorana zero-modes, with much of the evidence based on BCS mean-field theory. The direct application of mean-field arguments is tenuous in finite,…

强关联电子 · 物理学 2025-09-03 Jaden Thomas-Markarian , Kartiek Agarwal , Ivar Martin

We investigate a paradigmatic case of topological superconductivity in a one-dimensional nanowire with $d-$orbitals and a strong interplay of spin-orbital degrees of freedom due to the competition of orbital Rashba interaction, atomic…

超导电性 · 物理学 2022-12-19 J. Settino , F. Forte , C. A. Perroni , V. Cataudella , M. Cuoco , R. Citro

Recent experiments have produced mounting evidence of Majorana zero modes in nanowire-superconductor hybrids. Signatures of an expected topological phase transition accompanying the onset of these modes nevertheless remain elusive. We…

介观与纳米尺度物理 · 物理学 2016-06-13 Ryan V. Mishmash , David Aasen , Andrew P. Higginbotham , Jason Alicea

We study a topological superconducting nanowire that hosts gliding Majorana zero modes in the presence of a microwave cavity field. We show that the cavity decay rate depends on both the parity encoded by the Majorana zero modes and their…

介观与纳米尺度物理 · 物理学 2023-10-16 Olesia Dmytruk , Mircea Trif

Robust zero bias transport anomalies in semiconducting nanowires with proximity-induced superconductivity have been convincingly demonstrated in various experiments. While these are compatible with the existence of Majorana zero modes at…

介观与纳米尺度物理 · 物理学 2017-08-15 Elsa Prada , Ramón Aguado , Pablo San-Jose

One of the promising platforms for creating Majorana bound states is a hybrid nanostructure consisting of a semiconducting nanowire covered by a superconductor. We analyze the previously disregarded role of electrostatic interaction in…

介观与纳米尺度物理 · 物理学 2016-03-08 A. Vuik , D. Eeltink , A. R. Akhmerov , M. Wimmer

Full-shell nanowires (semiconducting nanowires fully coated with a superconducting shell) have been recently presented as a novel means to create Majorana zero modes. In contrast to partially coated nanowires, it has been argued that…

介观与纳米尺度物理 · 物理学 2020-05-27 Fernando Peñaranda , Ramón Aguado , Pablo San-Jose , Elsa Prada

We analyze influence of a dimerization on the topological phases of the Rashba nanowire proximitized to a superconducting substrate. We find that periodic alternations of the hopping integral and spin-orbit coupling can lead to band…

超导电性 · 物理学 2020-02-14 Aksel Kobiałka , Nicholas Sedlmayr , Maciej M. Maśka , Tadeusz Domański

As the condensed matter analog of Majorana fermion, the Majorana zero-mode is well known as a building block of fault-tolerant topological quantum computing. This review focuses on the recent progress of Majorana experiments, especially…

介观与纳米尺度物理 · 物理学 2024-03-21 Ji-Bang Fu , Bin Li , Xin-Fang Zhang , Guang-Zheng Yu , Guang-Yao Huang , Ming-Tang Deng

Due to the charge neutral and localized nature of surface Majorana modes, detection schemes usually rely on local spectroscopy or interference through the Josephson effect. Here, we theoretically study the magnetic response of a…

超导电性 · 物理学 2018-09-20 Luca Chirolli , Francisco Guinea

Semiconductor nanowires have opened new research avenues in quantum transport owing to their confined geometry and electrostatic tunability. They have offered an exceptional testbed for superconductivity, leading to the realization of…

We study how the shape of a periodic magnetic field affects the presence of Majorana bound states (MBS) in a nanowire-superconductor system. Motivated by the field configurations that can be produced by an array of nanomagnets, we consider…

介观与纳米尺度物理 · 物理学 2020-03-17 Viktoriia Kornich , Maxim G. Vavilov , Mark Friesen , M. A. Eriksson , S. N. Coppersmith

Condensed matter systems are continuously subjected to dissipation, which often has adverse effects on quantum phenomena. We focus on the impact of dissipation on a superconducting Rashba nanowire. We reveal that the system can still host…

介观与纳米尺度物理 · 物理学 2024-08-07 Arnob Kumar Ghosh , Annica M. Black-Schaffer

We analyze the superconducting gap in semiconductor/superconductor nanowires under orbital effects of a magnetic field in the weak- and strong-hybridization regimes using an universal procedure that guarantees the stationarity of the system…

介观与纳米尺度物理 · 物理学 2018-07-02 P. Wójcik , M. P. Nowak