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We show how angular momentum conservation can stabilise a symmetry-protected quasi-topological phase of matter supporting Majorana quasi-particles as edge modes in one-dimensional cold atom gases. We investigate a number-conserving…

强关联电子 · 物理学 2017-05-24 F. Iemini , L. Mazza , L. Fallani , P. Zoller , R. Fazio , M. Dalmonte

Realizing Majorana modes in topological superconductors, i.e., the condensed-matter counterpart of Majorana fermions in particle physics, may lead to a major advance in the field of topologically-protected quantum computation. Here, we…

介观与纳米尺度物理 · 物理学 2022-06-22 Pasquale Marra , Daisuke Inotani , Muneto Nitta

Just like insulators can host topological Dirac states at their edges, superconductors can also exhibit topological phases characterized by Majorana edge states. Remarkable zero-energy states have been recently observed at the two ends of…

In this work we consider superconductor-semiconductor hybrids containing both trivial and Majorana zero modes and explore their signatures in the Majorana polarization. In particular, we consider trivial zero energy states due to…

介观与纳米尺度物理 · 物理学 2024-10-04 Oladunjoye A. Awoga , Jorge Cayao

We consider Majorana zero modes in a Josephson junction on top of a topological insulator in transverse magnetic field. Majorana zero modes reside at periodically located nodes of Josephson vortices. We find that hybridization of these…

超导电性 · 物理学 2022-12-28 Stefan Backens , Alexander Shnirman , Yuriy Makhlin

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 investigate the sub gap properties of a three terminal Josephson T-junction composed of topologically superconducting wires connected by a normal metal region. This system naturally hosts zero energy Andreev bound states which are of…

介观与纳米尺度物理 · 物理学 2017-02-03 Christian Spånslätt , Eddy Ardonne

To confirm the Majorana signatures, significant effort has been devoted to distinguishing between Majorana zero modes (MZMs) and spatially separated quasi-Majorana modes (QMMs). Because both MZMs and QMMs cause a quantized zero-bias peak in…

介观与纳米尺度物理 · 物理学 2021-12-22 Donghao Liu , Zhan Cao , Xin Liu , Hao Zhang , Dong E. Liu

Quantum thermodynamics is a promising route to unambiguous detections of Majorana bound states. Being fundamentally different from quantum transport, this approach reveals unique Majorana thermodynamic behavior and deepens our insight into…

介观与纳米尺度物理 · 物理学 2021-11-12 Sergey Smirnov

We provide an argument based on flux insertion to show that certain superconductors with a non-trivial topological invariant have protected zero modes in their vortex cores. This argument has the flavor of a two dimensional index theorem…

超导电性 · 物理学 2015-05-18 Rahul Roy

Superconducting vortices are promising traps to confine non-Abelian Majorana quasi-particles. It has been widely believed that bulk-state topology, of either normal-state or superconducting ground-state wavefunctions, is crucial for…

超导电性 · 物理学 2023-02-13 Lun-Hui Hu , Rui-Xing Zhang

We propose a semiconductor-superconductor hybrid device for realizing topological superconductivity and Majorana zero modes consisting of a planar Josephson junction structure with periodically modulated junction width. By performing a…

介观与纳米尺度物理 · 物理学 2021-11-15 Purna P. Paudel , Trey Cole , Benjamin D. Woods , Tudor D. Stanescu

We study the low-energy transport properties of a hybrid device composed by a native quantum dot coupled to both ends of a topological superconducting nanowire section hosting Majorana zero-modes. The account of the coupling between the dot…

介观与纳米尺度物理 · 物理学 2020-10-14 L. S. Ricco , Y. Marques , J. E. Sanches , I. A. Shelykh , A. C. Seridonio

Thermoelectric phenomena resulting from an interplay between particle flows induced by electric fields and temperature inhomogeneities are extremely insightful as a tool providing substantial knowledge about the microscopic structure of a…

介观与纳米尺度物理 · 物理学 2018-04-27 Sergey Smirnov

We present a comprehensive theoretical analysis of the spin-dependent thermoelectric properties of a double quantum dot system coupled to a topological superconducting nanowire and ferromagnetic leads. The study focuses on the behavior of…

介观与纳米尺度物理 · 物理学 2025-09-18 Piotr Majek , Ireneusz Weymann

We study the thermoelectric transport through a single-level quantum dot (QD) coupled to two normal metallic leads and side-coupled to Majorana bound state (MBS). The Coulomb interaction in QD is considered. To investigate only the…

介观与纳米尺度物理 · 物理学 2019-05-10 Chol Won Ri , Kum Hyok Jong , Song Jin Im , Hak Chol Pak

We examine the transport properties of a double quantum dot system coupled to a topological superconducting nanowire hosting Majorana quasiparticles at its ends, with the central quantum dot attached to the left and right leads. We focus on…

介观与纳米尺度物理 · 物理学 2022-02-21 Piotr Majek , Ireneusz Weymann

The topological properties observed in iron-based superconductors extend our understanding of vortex Majorana quasiparticle excitations in unexpected ways. Vortex Majorana physics has been extensively studied within the context of the…

We have recently shown [Phys. Rev. B {\bf 89}, 165314 (2014)] that a non--interacting quantum dot coupled to a one--dimensional topological superconductor and to normal leads can sustain a Majorana mode even when the dot is expected to be…

介观与纳米尺度物理 · 物理学 2015-04-03 David A. Ruiz-Tijerina , E. Vernek , Luis G. G. V. Dias da Silva , J. C. Egues

We present a scheme to realize a topological superconducting system supporting Majorana zero modes, within a number-conserving framework suitable for optical-lattice experiments. Our approach builds on the engineering of pair-hopping…