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The effect of time-varying electromagnetic fields on electron coherence is investigated. A sinusoidal electromagnetic field produces a time varying Aharonov-Bohm phase. In a measurement of the interference pattern which averages over this…

量子物理 · 物理学 2009-11-10 Jen-Tsung Hsiang , L. H. Ford

We show theoretically that the strong coupling of circularly polarized photons to an exciton in ring-like semiconductor nanostructures results in physical nonequivalence of clockwise and counterclockwise exciton rotations in the ring. As a…

介观与纳米尺度物理 · 物理学 2015-06-10 O. V. Kibis , H. Sigurdsson , I. A. Shelykh

We have investigated the Aharonov-Bohm effect in a one-dimensional GaAs/GaAlAs ring at low magnetic fields. The oscillatory magnetoconductance of these systems are for the first time systematically studied as a function of density. We…

介观与纳米尺度物理 · 物理学 2009-10-31 S. Pedersen , A. E. Hansen , A. Kristensen , C. B. Soerensen , P. E. Lindelof

We propose a simple situation in which the magnetic Aharonov-Bohm potential influences the values of the deficiency indices of the initial Schr\"odinger operator, so determining whether the particle interacts with the solenoid or not. Even…

数学物理 · 物理学 2020-02-12 Cesar R. de Oliveira , Renan G. Romano

We study the effects of field modulation on the energy spectrum of an electron in a two-dimensional bipartite periodic lattice subject to a magnetic field. Dependence of the energy spectrum on both the period and the strength of field…

介观与纳米尺度物理 · 物理学 2009-10-31 Gi-Yeong Oh

We propose a general capacitive model for an antidot, which has two localized edge states with different spins in the quantum Hall regime. The capacitive coupling of localized excess charges, which are generated around the antidot due to…

介观与纳米尺度物理 · 物理学 2009-11-10 H. -S. Sim , M. Kataoka , Hangmo Yi , N. Y. Hwang , M. -S. Choi , S. -R. E. Yang

The gap oscillations caused by a magnetic flux penetrating a carbon nanotube represent one of the most spectacular observation of the Aharonov-Bohm effect at the nano--scale. Our understanding of this effect is, however, based on the…

介观与纳米尺度物理 · 物理学 2012-06-04 Davide Sangalli , Andrea Marini

The point-particle-like Hamiltonian of a biaxial spin particle with external magnetic field along the hard axis is obtained in terms of the potential field description of spin systems with exact spin-coordinate correspondence. The Zeeman…

凝聚态物理 · 物理学 2016-08-15 J. -Q. Liang , H. J. W. Müller-Kirsten , D. K. Park , F. -C. Pu

We show via tensor network methods that the Harper-Hofstadter Hamiltonian for hard-core bosons on a square geometry supports a topological phase realizing the $\nu=1/2$ fractional quantum Hall effect on the lattice. We address the…

量子气体 · 物理学 2017-11-16 Matthias Gerster , Matteo Rizzi , Pietro Silvi , Marcello Dalmonte , Simone Montangero

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 explain the origin and the nature of a special nonlinear supersymmetry of a reflectionless Poschl-Teller system by the Aharonov-Bohm effect for a nonrelativistic particle on the AdS_2. A key role in the supersymmetric structure appearing…

高能物理 - 理论 · 物理学 2009-04-02 Francisco Correa , Vit Jakubsky , Mikhail S. Plyushchay

Simulating quantum transport through mesoscopic, ring-shaped graphene structures, we address various quantum coherence and interference phenomena. First, a perpendicular magnetic field, penetrating the graphene ring, gives rise to…

介观与纳米尺度物理 · 物理学 2018-05-21 Alexander Filusch , Christian Wurl , Andreas Pieper , Holger Fehske

The one-dimensional Klein-Gordon equation is investigated with the most general Lorentz structure for the external potentials. The analysis and calculation of the reflection and transmission coefficients for the scattering of particles in a…

量子物理 · 物理学 2008-11-26 Tatiana R. Cardoso , Antonio S. de Castro

In this manuscript, we investigate the influence of the Aharonov-Casher effect on the generalized Dirac oscillator containing the Coulomb-type potential function related to a relativistic neutral particle having a permanent magnetic dipole…

量子物理 · 物理学 2022-05-17 Hao Chen , Zheng-Wen Long , Chao-Yun Long , Soroush Zare , Hassan Hassanabadi

The perturbation theory expansion of the Aharonov-Bohm scattering amplitude has previously been studied in the context of quantum mechanics for spin zero and spin-1/2 particles as well in Galilean covariant field theory. This problem is…

高能物理 - 理论 · 物理学 2016-09-06 C. R. Hagen

By breaking the time-reversal-symmetry in three-dimensional topological insulators with introduction of spontaneous magnetization or application of magnetic field, the surface states become gapped, leading to quantum anomalous Hall effect…

介观与纳米尺度物理 · 物理学 2019-06-26 R. Yoshimi , K. Yasuda , A. Tsukazaki , K. S. Takahashi , N. Nagaosa , M. Kawasaki , Y. Tokura

The Aharanov-Bohm (AB) effect, which predicts that a magnetic field strongly influences the wave function of an electrically charged particle, is investigated in a three site system in terms of the quantum control by an additional dephasing…

量子物理 · 物理学 2019-03-15 Georg Engelhardt , Jianshu Cao

We present an exact analytical study of Klein-Gordon (KG) scalar bosons and antibosons confined in the Bonnor-Melvin (BM) spacetime under a uniform magnetic field, incorporating rainbow gravity (RG) corrections with a positive cosmological…

广义相对论与量子宇宙学 · 物理学 2025-10-17 Omar Mustafa , Abdullah Guvendi

The nonlocal and topological nature of the molecular Aharonov-Bohm (MAB) effect is examined for real electronic Hamiltonians. A notion of preferred gauge for MAB is suggested. The MAB effect in the linear + quadratic $E\otimes \epsilon$…

量子物理 · 物理学 2015-06-26 Erik Sjöqvist

In this work, we study how the combination of rotation and a topological defect can influence the energy spectrum of a two dimensional electron gas in a strong perpendicular magnetic field. A deviation from the linear behavior of the energy…

介观与纳米尺度物理 · 物理学 2017-09-11 Julio Brandão , Cleverson Filgueiras , Moises Rojas , Fernando Moraes
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