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Majorana fermions are the real (in a mathematical sense) counterparts of complex fermions like ordinary electrons. The promise of topological quantum computing has lead to substantial experimental progress in realizing these particles in…

强关联电子 · 物理学 2019-08-06 Armin Rahmani , Marcel Franz

We report on several low temperature experiments supporting the presence of Majorana fermions in superconducting lead nanowires fabricated with a scanning tunneling microscope. These nanowires are the connecting bridges between the STM tip…

超导电性 · 物理学 2013-02-12 J. G. Rodrigo , V. Crespo , H. Suderow , S. Vieira , F. Guinea

We propose and analyze continuous measurements of atom number and atomic currents using dispersive probing in an optical cavity. For an atom-number measurement in a closed system, we relate both the detection noise and the heating rate due…

量子气体 · 物理学 2018-12-18 Shun Uchino , Masahito Ueda , Jean-Philippe Brantut

We propose two experiments to probe the Majorana fermion edge states that occur at a junction between a superconductor and a magnet deposited on the surface of a topological insulator. Combining two Majorana fermions into a single Dirac…

介观与纳米尺度物理 · 物理学 2015-05-13 Liang Fu , C. L. Kane

Motivated by recent experiments searching for Majorana fermions (MFs) in hybrid semiconducting-superconducting nanostructures, we consider a realistic tight-binding model and analyze its transport behavior numerically. In particular, we…

介观与纳米尺度物理 · 物理学 2013-02-04 Diego Rainis , Luka Trifunovic , Jelena Klinovaja , Daniel Loss

We compute various current correlation functions of electrons flowing from a topological nanowire to the tip of a superconducting scanning tunnel microscope and identify fingerprints of a Majorana bound state. In particular, the spin…

介观与纳米尺度物理 · 物理学 2017-09-11 Pierre Devillard , Denis Chevallier , Mathias Albert

Heat is a familiar form of energy transported from a hot side to a colder side of an object, but not a notion associated with microscopic measurements of electronic properties. A temperature difference within a material causes charge…

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

The external controllability of topological superconductors and Majorana fermions would be important both for fundamental and practical interests. Here we predict the electric-field control of Majorana fermions in two-dimensional…

超导电性 · 物理学 2016-12-07 Jing Wang

We study a one-dimensional (1D) interacting electronic liquid coupled to a 1D array of classical magnetic moments and to a superconductor. We show that at low energy and temperature the magnetic moments and the electrons become strongly…

介观与纳米尺度物理 · 物理学 2013-10-08 Bernd Braunecker , Pascal Simon

We investigate universal properties of one-dimensional multi-component systems comprised of fermions, bosons, or an arbitrary mixture, with contact interactions and subjected to an external potential. The masses and the coupling strengths…

量子气体 · 物理学 2017-12-14 Ovidiu I. Patu , Andreas Klumper

At the availability of a nonzero mass, the same neutrino regardless of whether it refers to Dirac or Majorana fermions, must possess simultaneously each of the anapole and electric dipole moments. Their interaction with the field of…

高能物理 - 唯象学 · 物理学 2014-11-17 Rasulkhozha S. Sharafiddinov

The sole static electromagnetic property of a spin-$\frac{1}{2}$ Majorana fermion is its anapole moment. Though they cannot couple to single real photons, these particles can interact with electric currents through virtual photons. If a…

高能物理 - 唯象学 · 物理学 2022-12-07 Kiana Walter , Kobi Hall , David C. Latimer

Majorana fermions are spin-1/2 neutral particles that are their own antiparticles and were initially predicted by Ettore Majorana in particle physics but their observation still remains elusive. The concept of Majorana fermions has been…

超导电性 · 物理学 2024-05-07 Yukio Tanaka , Shun Tamura , Jorge Cayao

It was predicted by Tewari [Phys. Rev. Lett. {\bf 100}, 027001 (2008)] that a teleportationlike electron transfer phenomenon is one of the novel consequences of the existence of Majorana fermion, because of the inherently nonlocal nature.…

介观与纳米尺度物理 · 物理学 2023-09-26 Peiyue Wang , Yunshan Cao , Ming Gong , Shu-Shen Li , Xin-Qi Li

We develop a detailed theory describing a non-trivial interplay between non-equilibrium effects and long-range quantum coherence in superconducting hybrid nanostructures exposed to a temperature gradient. We establish a direct relation…

超导电性 · 物理学 2021-04-05 Mikhail S. Kalenkov , Andrei D. Zaikin

We prove that quantum information encoded in some topological excitations, including certain Majorana zero modes, is protected in closed systems for a time scale exponentially long in system parameters. This protection holds even at…

统计力学 · 物理学 2017-12-20 Dominic V. Else , Paul Fendley , Jack Kemp , Chetan Nayak

From sand piles to electrons in metals, one of the greatest challenges in modern physics is to understand the behavior of an ensemble of strongly interacting particles. A class of quantum many-body systems such as neutron matter and cold…

量子气体 · 物理学 2010-06-01 Sylvain Nascimbène , Nir Navon , Kaijun Jiang , Frédéric Chevy , Christophe Salomon

The nonlocal nature of the fermionic mode spanned by a pair of Majorana bound states in a one-dimensional topological superconductor has inspired many proposals aiming at demonstrating this property in transport. In particular, transport…

超导电性 · 物理学 2015-09-01 Jascha Ulrich , Fabian Hassler

In condensed matter physics, non-Abelian statistics for Majorana zero modes (or Majorana Fermions) is very important, really exotic, and completely robust. The race for searching Majorana zero modes and verifying the corresponding…

介观与纳米尺度物理 · 物理学 2021-12-22 Xiao-Ming Zhao , Cui-Xian Guo , Meng-Lei Yang , Heng-Wang , Wu-Ming Liu , Su-Peng Kou