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Majorana zero-modes (MZMs) are spatially-localized zero-energy fractional quasiparticles with non-Abelian braiding statistics that hold a great promise for topological quantum computing. Due to its particle-antiparticle equivalence, an MZM…

The zero-bias peak (ZBP) is understood as the definite signature of a Majorana bound state (MBS) when attached to a semi-infinite Kitaev nanowire (KNW) nearby zero temperature. However, such characteristics concerning the realization of the…

介观与纳米尺度物理 · 物理学 2017-08-15 V. L. Campo , L. S. Ricco , A. C. Seridonio

It is predicted that a vortex in a topological superconductor contains a Majorana zero mode (MZM). The confirmative Majorana signature, i.e., the $2e^2/h$ quantized conductance, however is easily sabotaged by unavoidable interruptions, e.g.…

超导电性 · 物理学 2023-07-11 Gu Zhang , Chuang Li , Geng Li , Can-Li Song , Xin Liu , Fu-Chun Zhang , Dong E. Liu

The Majorana zero mode (MZM), which manifests as an exotic neutral excitation in superconductors, is the building block of topological quantum computing. It has recently been found in the vortices of several iron-based superconductors as a…

超导电性 · 物理学 2019-04-11 C. Chen , Q. Liu , T. Z. Zhang , D. Li , P. P. Shen , X. L. Dong , Z. -X. Zhao , T. Zhang , D. L. Feng

Using a cryogenic scanning tunneling microscopy, we report the observation of topologically nontrivial superconductivity on a single material of \beta-Bi2Pd films grown by molecular beam epitaxy. The superconducting gap associated with…

超导电性 · 物理学 2017-06-20 Yan-Feng Lv , Wen-Lin Wang , Yi-Min Zhang , Hao Ding , Wei Li , Lili Wang , Ke He , Can-Li Song , Xu-Cun Ma , Qi-Kun Xue

Majorana zero modes (MZMs) realize a representation of non-abelian braid groups that enable topological quantum computation, wherein the storage and manipulation of information occur in decoherence-free degrees of freedom. This paper is…

强关联电子 · 物理学 2021-11-17 Sihao Huang

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…

We report electron transport studies on InSb-Al hybrid semiconductor-superconductor nanowire devices. Tunnelling spectroscopy is used to measure the evolution of subgap states while varying magnetic field and voltages applied to various…

Magnet-superconductor hybrid (MSH) systems represent promising platforms to host Majorana zero modes (MZMs), the elemental building blocks for fault-tolerant quantum computers. Theoretical description of such MSH structures is mostly based…

Rashba spin-orbit coupled semiconductor-superconductor hybrid structures in the presence of Zeeman splitting have emerged as the first experimentally realizable topological superconductor supporting zero-energy Majorana bound states.…

超导电性 · 物理学 2013-03-29 Dibyendu Roy , C. J. Bolech , Nayana Shah

Detecting Majorana zero modes (MZMs) in topological superconductors remains challenging, as localized non-topological states can mimic MZM signatures. Here, we propose electron interferometry by non-local transport measurements as a…

介观与纳米尺度物理 · 物理学 2024-10-11 Nadav Drechsler , Omri Lesser , Yuval Oreg

The unambiguous identification of Majorana zero modes (MZMs) is one of the most outstanding problems of condensed matter physics. Thermal transport provides a detection tool that is sensitive to these chargeless quasiparticles. We study…

介观与纳米尺度物理 · 物理学 2024-08-28 Raffael L. Klees , Daniel Gresta , Jonathan Sturm , Laurens W. Molenkamp , Ewelina M. Hankiewicz

We explore the tunneling transport properties of a quantum dot embedded in an optical microcavity and coupled to a semiconductor-superconductor one-dimensional nanowire (Majorana nanowire) hosting Majorana zero modes (MZMs) at their edges.…

介观与纳米尺度物理 · 物理学 2022-02-09 L. S. Ricco , V. K. Kozin , A. C. Seridonio , I. A. Shelykh

Majorana zero modes are quasiparticle states localized at the boundaries of topological superconductors that are expected to be ideal building blocks for fault-tolerant quantum computing. Several observations of zero-bias conductance peaks…

Despite recent experimental progress towards observing large zero-bias conductance peaks (ZBCPs) as signatures of Majorana modes, confusion remains about whether Majorana modes have been observed. This is in part due to the theoretical…

介观与纳米尺度物理 · 物理学 2022-09-14 Yi-Hua Lai , Sankar Das Sarma , Jay D. Sau

Focusing on the implications of recent experiments on Majorana zero modes in semiconductor-superconductor (SM-SC) heterostructures, we critically examine the quantization of the zero-bias differential conductance as a possible unambiguous…

介观与纳米尺度物理 · 物理学 2024-03-12 Chuanchang Zeng , Gargee Sharma , Sumanta Tewari , Tudor Stanescu

We theoretically consider the observed soft gap in the proximity-induced superconducting state of semiconductor nanowires in the presence of spin-orbit coupling, Zeeman splitting, and tunneling leads, but in the absence of any extrinsic…

介观与纳米尺度物理 · 物理学 2017-09-07 Chun-Xiao Liu , F. Setiawan , Jay D. Sau , S. Das Sarma

We consider a simple conceptual question with respect to Majorana zero modes in semiconductor nanowires: Can the measured non-ideal values of the zero-bias-conductance-peak in the tunneling experiments be used as a characteristic to predict…

介观与纳米尺度物理 · 物理学 2016-07-22 S. Das Sarma , Amit Nag , Jay D. Sau

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

Majorana zero modes (MZMs) emerging at the edges of topological superconducting wires have been proposed as the building blocks of novel, fault-tolerant quantum computation protocols. Coherent detection and manipulation of such states in…

介观与纳米尺度物理 · 物理学 2019-08-28 Jesus D. Cifuentes , Luis G. G. V. Dias da Silva