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The Darwin-Breit Hamiltonian is applied to the Aharonov-Bohm experiment. In agreement with the standard Maxwell-Lorentz theory, the force acting on electrons from infinite solenoids or ferromagnetic rods vanishes. However, the interaction…

综合物理 · 物理学 2008-03-19 Eugene V. Stefanovich

The Aharonov-Bohm effect is a fundamental topological phenomenon with a wide range of applications. It consists of a charge encircling a region with a magnetic flux in a superposition of wave packets having their relative phase affected by…

量子物理 · 物理学 2023-03-17 Ismael L. Paiva , Pedro R. Dieguez , Renato M. Angelo , Eliahu Cohen

We study the effect of a sharply localized magnetic field on the electron transport in a strip (ribbon) of graphene sheet, which allows to give results for the transmission and reflection probability through magnetic barriers. The magnetic…

介观与纳米尺度物理 · 物理学 2015-05-27 Abdulaziz D. Alhaidari , Hocine Bahlouli , Abderrahim El Mouhafid , Ahmed Jellal

We analyse the conductance of the Aharonov-Bohm one-dimensional quantum ring touching a quantum wire. It is shown that in accordance with experimental data the period of the AB oscillations strongly depends on the chemical potential and the…

介观与纳米尺度物理 · 物理学 2009-11-11 I. A. Shelykh , N. G. Galkin , N. T. Bagraev

When a magnetic field pierces a multiple-connected quantum system, the corresponding wavefunction is altered although no net Lorentz force acts upon its carriers. This is the so called Aharonov-Bohm effect. The most simple…

介观与纳米尺度物理 · 物理学 2007-05-23 J. Planelles , J. I. Climente , J. L. Movilla

Ever since its discovery, the electron spin has only been measured or manipulated through the application of an electromagnetic force acting on the associated magnetic moment. In this work, we propose a spin Aharonov-Bohm effect in which…

介观与纳米尺度物理 · 物理学 2010-11-05 Joseph Maciejko , Eun-Ah Kim , Xiao-Liang Qi

We define a mesoscopic ring in a 2-dimensional electron gas (2DEG) interrupted by two tunnel barriers, enabling us to apply a well-defined potential difference between the two halves of the ring. The electron interference in the ring is…

We study the analogy between propagation of light rays in a stationary curved spacetime and in a toroidal (meta-)material. After introducing a novel gravitational analog of the index of refraction of a magneto-electric medium, it is argued…

广义相对论与量子宇宙学 · 物理学 2020-05-08 A. Besharat , M. Miri , M. Nouri-Zonoz

We show that transport and thermodynamic properties of \emph{singly-connected} disordered conductors exhibit quantum Aharonov - Bohm oscillations with the total magnetic flux through the system. The oscillations are associated with the…

介观与纳米尺度物理 · 物理学 2015-03-05 I. L. Aleiner , A. V. Andreev , V. Vinokur

The canonical Aharonov-Bohm effect is usually studied with time-independent potentials. In this work, we investigate the Aharonov-Bohm phase acquired by a charged particle moving in {\it time-dependent} potentials . In particular, we focus…

高能物理 - 理论 · 物理学 2015-09-29 Max Bright , Douglas Singleton , Atsushi Yoshida

The nonlinear electronic transport properties of a ballistic Aharonov-Bohm ring are investigated. It is demonstrated how the electronic interaction breaks the phase rigidity in a two-probe mesoscopic device as the voltage bias is increased.…

介观与纳米尺度物理 · 物理学 2015-05-14 Alexis R. Hernández , Caio H. Lewenkopf

A single-mode microcavity with an embedded Aharonov-Bohm quantum ring, which is pierced by a magnetic flux and subjected to a lateral electric field, is studied theoretically. It is shown that external electric and magnetic fields provide…

介观与纳米尺度物理 · 物理学 2014-09-02 A. M. Alexeev , I. A. Shelykh , M. E. Portnoi

The Schrodinger formalism of quantum mechanics is used to demonstrate the existence of the Aharonov-Bohm effect in momentum space and set-ups for experimentally demonstrating it are proposed for either free or ballistic electrons.

量子物理 · 物理学 2007-05-23 D. Dragoman , S. Bogdan

The unique ultra-relativistic, massless, nature of electron states in two-dimensional extended graphene sheets, brought about by the honeycomb lattice arrangement of carbon atoms in two-dimensions, provides ingress to explorations of…

介观与纳米尺度物理 · 物理学 2015-02-18 Constantine Yannouleas , Igor Romanovsky , Uzi Landman

The molecular states of conduction electrons in laterally coupled quantum rings are investigated theoretically. The states are shown to have a distinct magnetic field dependence, which gives rise to periodic fluctuations of the tunnel…

介观与纳米尺度物理 · 物理学 2007-12-19 JI Climente , J Planelles

Quantum-mechanical scattering of nonrelativistic charged particles by a magnetic vortex of nonzero transverse size is considered. We show that the flux of the vortex serves as a gate for the strictly forward propagation of particles with…

量子物理 · 物理学 2015-06-03 Yu. A. Sitenko , N. D. Vlasii

Signs of hypothetical light gauge bosons from a hidden sector may appear in Aharonov-Bohm-like experiments. The absence of signal in carried on experiments allow us to set a modest constraint to the mass and coupling constant of these…

高能物理 - 唯象学 · 物理学 2013-09-18 Paola Arias

We study the conductance through finite Aharonov-Bohm rings of interacting electrons weakly coupled to non-interacting leads at two arbitrary sites. This model can describe an array of quantum dots with a large charging energy compared to…

强关联电子 · 物理学 2009-10-15 Julián Rincón , A. A. Aligia , K. Hallberg

The interaction between a quantum charge and a dynamic source of a magnetic field is considered in the Aharonov-Bohm scenario. It is shown that, in weak interactions with a post-selection of the source, the effective vector potential is,…

量子物理 · 物理学 2023-05-23 Ismael L. Paiva , Yakir Aharonov , Jeff Tollaksen , Mordecai Waegell

We show how the Aharonov-Bohm flux (AB) $\phi_i$ and the dual gaps $(\Delta_1, \Delta_2)$ can affect the electron scattering in graphene quantum dots (GQDs) of radius $r_0$ in the presence of an electrostatic potential $V$. After obtaining…

介观与纳米尺度物理 · 物理学 2024-09-23 Fatima Belokda , Ahmed Bouhlal , Ahmed Jellal