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An analysis of orbital magnetization in band insulators is provided. It is shown that a previously proposed electronic orbital angular-momentum operator generalizes the ``modern theory of orbital magnetization'' to include non-local…

材料科学 · 物理学 2023-07-12 Jacques K. Desmarais , Bernard Kirtman , Michel Rérat

We analyze two simple model planar molecules: an ionic molecule with D3 symmetry and a covalent molecule with D6 symmetry. Both symmetries allow the existence of chiral molecular orbitals and normal modes that are coupled to each other in a…

介观与纳米尺度物理 · 物理学 2025-11-05 Ivan Pasqua , Gregorio Staffieri , Michele Fabrizio

Unmagnetized cold plasma modes are investigated in the context of the chiral Maxwell-Carroll-Field-Jackiw (MCJF) electrodynamics, where the axion chiral factor acts retrieving some typical properties of magnetized plasmas. The Maxwell…

等离子体物理 · 物理学 2025-07-14 Filipe S. Ribeiro , Pedro D. S. Silva , Manoel M. Ferreira

The availability of large magnetic fields at international facilities and of simulated magnetic fields that can reach the flux-quantum-per-unit-area level in cold atoms, calls for systematic studies of orbital effects of the magnetic field…

强关联电子 · 物理学 2018-08-20 S. Acheche , L-F. Arsenault , A. -M. S. Tremblay

We derive expressions for the scattering, extinction and conversion of the chirality of monochromatic light scattered by bodies which are characterized by a T-matrix. In analogy to the conditions obtained from the conservation of energy,…

光学 · 物理学 2018-06-22 Philipp Gutsche , Manuel Nieto-Vesperinas

We propose a new type of a chiral metamaterial based on an ensemble of artificial molecules formed by three identical quantum-dots in a triangular arrangement. A static magnetic field oriented perpendicular to the plane breaks mirror…

介观与纳米尺度物理 · 物理学 2014-12-04 Panagiotis Kotetes , Pei-Qing Jin , Michael Marthaler , Gerd Schön

Working in the crystal-momentum representation, we calculate the optical conductivity of noncentrosymmetric insulating crystals at first order in the wave vector of light. The time-even part of this tensor describes natural optical activity…

介观与纳米尺度物理 · 物理学 2010-12-30 Andrei Malashevich , Ivo Souza

This research focuses on a coherently driven four-level atomic medium with the aim of inducing a negative index of refraction while taking into consideration local field corrections as well as magnetoelectric cross coupling, i.e. chirality,…

材料科学 · 物理学 2011-07-06 F. Bello

It is generally believed that the right-handed circularly polarized (RCP) and left-handed circularly polarized (LCP) waves in an isotropic chiral medium propagate at different velocities, known as circular birefringence. Here we show that…

光学 · 物理学 2024-04-23 Zhi-Juan Hu , Chun-Fang Li

The eigenvalue spectrum of the fractional quantum harmonic oscillator is calculated numerically solving the fractional Schr\"odinger equation based on the Riemann and Caputo definition of a fractional derivative. The fractional approach…

综合物理 · 物理学 2015-03-20 Richard Herrmann

Starting from the modified Maxwell equations in Carroll-Field-Jackiw electrodynamics we study the electromagnetic radiation in a chiral medium characterized by an axion coupling $\theta(x)=b_\mu x^\mu$, with $b_\mu= (0,\mathbf{b})$, which…

高能物理 - 唯象学 · 物理学 2023-06-14 Eduardo Barredo-Alamilla , Luis F. Urrutia , Manoel M. Ferreira

Chiral oligopeptide monolayers were adsorbed on a ferromagnetic surface and their magnetoresistance was measured as a function of the angle between the magnetization of the ferromagnet and the surface normal. These measurements were…

介观与纳米尺度物理 · 物理学 2024-02-06 Tapan Kumar Das , Ron Naaman , Jonas Fransson

Photons propagating in strong magnetic fields are subject to a phenomenon called the "vacuum birefringence" where refractive indices of two physical modes both deviate from unity and are different from each other. We compute the vacuum…

高能物理 - 唯象学 · 物理学 2013-05-02 Koichi Hattori , Kazunori Itakura

The phenomenon of molecular optical activity manifests itself as the rotation of the plane of linear polarization when light passes through chiral media. Measurements of optical activity and its wavelength dependence, optical rotatory…

We propose a new approach to the determination of hadronic observables in which the essential features of chiral symmetry are combined with conventional constituent quark models. To illustrate the approach, we consider the simple quark…

高能物理 - 唯象学 · 物理学 2010-02-17 I. C. Cloet , D. B. Leinweber , A. W. Thomas

The key formula for computing the orbital magnetization of a crystalline system has been recently found [D. Ceresoli, T. Thonhauser, D. Vanderbilt, R. Resta, Phys. Rev. B {\bf 74}, 024408 (2006)]: it is given in terms of a Brillouin-zone…

材料科学 · 物理学 2007-07-19 D. Ceresoli , R. Resta

A simple molecular model of chiral molecules is presented in this paper : the chiral dipolar hard sphere model. The discriminatory interaction between enantiomers is represented by electrostatic (or magnetic) dipoles-dipoles interactions :…

软凝聚态物质 · 物理学 2010-09-08 Martial Mazars

We present a novel perspective to characterize the chiral magnetic and related effects in terms of angular decomposed modes. We find that the vector current and the chirality density are connected through a surprisingly simple relation for…

高能物理 - 唯象学 · 物理学 2020-07-31 Kenji Fukushima , Takuya Shimazaki , Lingxiao Wang

The method of retarded potentials is used to derive the Biot-Savart law, taking into account the correction that describes the chaotic motion of charged particles in rectilinear currents. Then this method is used for circular currents and…

经典物理 · 物理学 2021-07-16 Sergey G. Fedosin

We generalize a proposal by Sorensen et al. [Phys. Rev. Lett. 94, 086803 (2005)] for creating an artificial magnetic field in a cold atom system on a square optical lattice. This leads us to an effective lattice model with tunable spatially…

量子气体 · 物理学 2018-12-13 Malcolm P. Kennett , Nazanin Komeilizadeh , Kamran Kaveh , Peter M. Smith