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We calculate the optical conductivity of type-I and type-II multi-Weyl semimetals(m-WSMs) in time-reversal(TR) broken case at finite doping. It is found that both longitudinal and Hall conductivities are renormalized by J(monopole charge)…

Strongly Correlated Electrons · Physics 2022-09-16 Amit Gupta

In this letter, we investigate the terahertz (THz) electro-optic Kerr effect (KE) dynamics in LaAlO3 (LAO), a widely used substrate for thin film preparation. We show that the KE dynamics strongly depend on the material anisotropy due to…

We predict a new type of ultrafast third-order nonlinearity of surface plasmon polaritons (SPP) in planar magneto-plasmonic structures caused by the inverse Faraday effect (IFE). Planar SPPs with a significant longitudinal component of the…

Optics · Physics 2018-07-19 Song-Jin Im , Chol-Song Ri , Kum-Song Ho , Joachim Herrmann

Topological insulators display unusual light-matter interactions due to the helical nature of surface electronic states. We study the near-field interaction of light propagating in an optical fiber with crystals of Sb2Te3, a 3D topological…

Materials Science · Physics 2018-10-16 Moti Fridman , Vlada Artel , Anna Peled , Shir Shahal , Ashwin Ramasubramaniam , Doron Naveh

Graphene can be magnetized through nonlinear response of its orbital angular momentum to an intense circularly polarized light. This optomagnetic effect can be well exemplified by the Inverse Faraday Effect (IFE) where an…

Optics · Physics 2023-07-26 Sina Abedi , A. Hamed Majedi

The linear magneto-optical Kerr effect (MOKE) is often used to probe magnetism of ferromagnetic materials, but MOKE cannot be applied to collinear antiferromagnets (AFs) due to the cancellation of sub-lattice magnetization. Magneto-optical…

The observation of anomalously large polarization rotations in pump-probe experiments with circularly polarized light has recently challenged the conventional understanding of the inverse Faraday effect. The striking magnitude of these…

Materials Science · Physics 2026-05-27 Niccolò Sellati , Jacopo Fiore , Lara Benfatto

We present an analytical model for the Seebeck coefficient S of superlattice materials that explicitly takes into account the energy relaxation due to electron-optical phonon (e-ph) scattering. In such materials, the Seebeck coefficient is…

Mesoscale and Nanoscale Physics · Physics 2019-09-04 Vassilios Vargiamidis , Mischa Thesberg , Neophytos Neophytou

We suppose that linear optical polarization is due to multiple scattering in optically thick magnetized accretion disk around central black hole. The polarization degree is very sensitive to the spin of black hole - for Kerr rotating hole…

High Energy Astrophysical Phenomena · Physics 2010-11-10 N. A. Silant'ev , M. Yu. Piotrovich , Yu. N. Gnedin , T. M. Natsvlishvili

Nonlinear optical interactions in nanostructures are subjects of both fundamental research and practical applications. The optical Kerr effect, a third-order nonlinear optical phenomenon, induces anisotropic changes in the refractive index…

Optics · Physics 2024-09-04 Subhajit Bej , Nikolai Tkachenko , Robert Fickler , Tapio Niemi

A theoretical study is presented for the random aspect of an optical vortex inherent in the nonlinear birefringent Kerr effect, which is called the optical spin vortex. We start with the two-component nonlinear Schr\"{o}dinger equation. The…

Statistical Mechanics · Physics 2020-09-21 Satoshi Tsuchida , Hiroshi Kuratsuji

Here we describe how certain classes of two dimensional topological insulators, including the CdTe$/$HgTe quantum wells, display a new type of optical activity in two dimensions similar to the magneto-optical Kerr effect in the quantum Hall…

Mesoscale and Nanoscale Physics · Physics 2014-07-25 Alberto Cortijo

We explore the interplay of electron-electron correlations and spin-orbit coupling in the model Fermi liquid Sr2RuO4 using laser-based angle-resolved photoemission spectroscopy. Our precise measurement of the Fermi surface confirms the…

Optical control of spin in semiconductors has been pioneered using nanostructures of III-V and II-VI semiconductors, but the emergence of two-dimensional van der Waals materials offers an alternative low-dimensional platform for spintronic…

Spin precession was nonthermally induced by an ultrashort laser pulse in orthoferrite DyFeO3 with a pump-probe technique. Both circularly and linearly polarized pulses led to spin precessions; these phenomena are interpreted as the inverse…

Strongly Correlated Electrons · Physics 2017-04-13 Ryugo Iida , Takuya Satoh , Tsutomu Shimura , Kazuo Kuroda , B. A. Ivanov , Yusuke Tokunaga , Yoshinori Tokura

The well-known Kerr effect in isotropic fluids consists in the appearance of uniaxial orientational order and birefringence that grows as the square of the applied electric field. We predict and observe that at a high electric field, the…

Photoinduced magnetization dynamics is investigated in chemically ordered $(\mathrm{LaMnO}_3)_{2n}/(\mathrm{SrMnO}_3)_n$ superlattices using the time-resolved magneto-optic Kerr effect. A monotonic frequency-field dependence is observed for…

Materials Science · Physics 2016-08-14 H. B. Zhao , K. J. Smith , Y. Fan , G. Lüpke , A. Bhattacharya , S. D. Bader , M. Warusawithana , X. Zhai , J. N. Eckstein

Kerr-effect-induced changes of the polarization state of light are well known in pulsed laser systems. An example is nonlinear polarization rotation, which is critical to the operation of many types of mode-locked lasers. Here, we…

Optical impact on the spin system in a magnetically ordered medium provides a unique possibility for local manipulation of magnetization at subpicosecond time scales that is very promising for magnetic data processing and other magnonics…

The Rotational Doppler Effect (RDE) involves both the orbital angular momentum of electromagnetic radiation as well as its helicity. The RDE phenomena associated with photon helicity go beyond the standard theory of relativity. The purpose…

General Relativity and Quantum Cosmology · Physics 2024-03-27 Bahram Mashhoon