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Motivated by recent experiments we consider transport across an interacting magnetic impurity coupled to the Majorana zero mode (MZM) observed at the boundary of a topological superconductor (SC). In the presence of a finite tunneling…

介观与纳米尺度物理 · 物理学 2022-03-11 Daniele Guerci , Andrea Nava

In the topological phase of spin-orbit coupled nanowires Majorana bound states are known to localize at the nanowire edges and to exhibit a spin density orthogonal to both the magnetic field and the spin-orbit field. By investigating a…

介观与纳米尺度物理 · 物理学 2020-05-18 Lorenzo Rossi , Fabrizio Dolcini , Fausto Rossi

We introduce a scheme for preparation, manipulation, and readout of Majorana zero modes in semiconducting wires with mesoscopic superconducting islands. Our approach synthesizes recent advances in materials growth with tools commonly used…

The nonlocal nature of the Majorana zero modes implies an inherent teleportation channel and unique transport signatures for Majorana identification. In this work we make an effort to eliminate some inconsistencies between the Bogoliubov-de…

介观与纳米尺度物理 · 物理学 2023-09-26 Xin-Qi Li , Luting Xu

Majorana modes are zero-energy excitations of a topological superconductor that exhibit non-Abelian statistics. Following proposals for their detection in a semiconductor nanowire coupled to an s-wave superconductor, several tunneling…

Engineering effective p-wave superconductors hosting Majorana quasiparticles (MQPs) is nowadays of particular interest, also in view of the possible utilization of MQPs in fault-tolerant topological quantum computation. In quasi…

介观与纳米尺度物理 · 物理学 2018-02-28 Magdalena Marganska , Lars Milz , Wataru Izumida , Christoph Strunk , Milena Grifoni

We present a theoretical analysis of low-energy quantum transport in coupled Majorana box devices. A single Majorana box represents a Coulomb-blockaded mesoscopic superconductor proximitizing two or more long topological nanowires. The box…

介观与纳米尺度物理 · 物理学 2018-05-18 Matthias Gau , Stephan Plugge , Reinhold Egger

We present transport measurements in superconductor-nanowire devices with a gated constriction forming a quantum point contact. Zero-bias features in tunneling spectroscopy appear at finite magnetic fields, and oscillate in amplitude and…

介观与纳米尺度物理 · 物理学 2013-06-11 H. O. H. Churchill , V. Fatemi , K. Grove-Rasmussen , M. T. Deng , P. Caroff , H. Q. Xu , C. M. Marcus

We consider a new model system supporting Majorana zero modes based on semiconductor nanowires with a full superconducting shell. We demonstrate that, in the presence of spin-orbit coupling in the semiconductor induced by a radial electric…

The non-Abelian statistics of Majorana fermions, their role in topological quantum computation, and the possibility of realizing them in condensed matter systems, has attracted considerable attention. While there have been recent reports of…

强关联电子 · 物理学 2016-02-24 David Nozadze , Nandini Trivedi

We investigate the subgap spectrum and transport properties of the quantum dot placed on interface between metallic and superconducting leads and additionally side-coupled to the edge of topological superconducting (TS) chain, hosting the…

介观与纳米尺度物理 · 物理学 2017-01-02 J. Baranski , A. Kobialka , T. Domanski

Tunneling conductance spectroscopy in normal metal-superconductor junctions is an important tool for probing Andreev bound states in mesoscopic superconducting devices, such as Majorana nanowires. In an ideal superconducting device, the…

介观与纳米尺度物理 · 物理学 2021-02-17 André Melo , Chun-Xiao Liu , Piotr Rożek , Tómas Örn Rosdahl , Michael Wimmer

We analyze dynamical transport properties of a hybrid nanostructure, comprising a correlated quantum dot embedded between the source and drain electrodes, which are subject to an ac voltage, focusing on signatures imprinted on the charge…

介观与纳米尺度物理 · 物理学 2024-10-02 Krzysztof P. Wójcik , Tadeusz Domański , Ireneusz Weymann

Semiconductor nanowires with strong spin-orbit coupling and proximity-induced s-wave superconductivity in an external magnetic field have been the most promising settings for approaches towards experimental evidence of topological Majorana…

介观与纳米尺度物理 · 物理学 2014-10-30 Stefan Rex , Asle Sudbø

When a strongly correlated quantum dot is tunnel-coupled to a superconductor, it leads to the formation of Shiba bound states inside the superconducting gap. They have been measured experimentally in a superconductor-quantum dot-normal lead…

介观与纳米尺度物理 · 物理学 2016-07-07 Razvan Chirla , Catalin Pascu Moca

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 study the quasiparticle spectrum of a hybrid system, comprising a correlated (Anderson-type) quantum dot coupled to a topological superconducting nanowire hosting the Majorana boundarymodes. From the exact solution of the low-energy…

介观与纳米尺度物理 · 物理学 2025-10-21 Jan Barański , Magdalena Barańska , Tomasz Zienkiewicz , Tadeusz Domański

In this work, we consider a single-level quantum dot (QD) and a Majorana bound state (MBS) placed at the end of a topological superconducting nanowire (TSW). Both are coupled to the continuum and do not have a direct connection between…

介观与纳米尺度物理 · 物理学 2020-03-11 J. P. Ramos-Andrade , P. A. Orellana , E. Vernek

We investigate gradual development of the quasiparticle states in two quantum dots attached to opposite sides of the topological superconducting nanowire, hosting the boundary modes. Specifically, we explore the non-equilibrium…

介观与纳米尺度物理 · 物理学 2025-09-16 R. Taranko , K. Wrześniewski , I. Weymann , T. Domański

The Majorana zero mode in the semiconductor-superconductor nanowire is one of the promising candidates for topological quantum computing. Recently, in islands of nanowires, subgap-state energies have been experimentally observed to…

介观与纳米尺度物理 · 物理学 2019-04-17 Zhan Cao , Hao Zhang , Hai-Feng Lü , Wan-Xiu He , Hai-Zhou Lu , X. C. Xie