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The magnetic field associated with a picosecond intense electron pulse is shown to switch locally the magnetization of extended films and nanostructures and to ignite locally spin waves excitations. Also, topologically protected magnetic…

Mesoscale and Nanoscale Physics · Physics 2017-07-28 Alexander F. Schäffer , Hermann A. Dürr , Jamal Berakdar

We study the propagation of electromagnetic waves in a chiral fluid, where the molecules are described by a simplified version of the Kuhn coupled oscillator model. The eigenmodes of Maxwell's equations are circularly polarized waves. The…

Physics Education · Physics 2008-03-05 T. Garel

We demonstrate that in a chiral plasma subject to an external magnetic field, the chiral vortical effect can induce a new type of magnetohydrodynamic instability which we refer to as the {\it chiral magnetovortical instability}. This…

Nuclear Theory · Physics 2023-07-14 Shuai Wang , Xu-Guang Huang

Conventional spin pumping, driven by magnetization dynamics, is longitudinal since the pumped spin current flows normal to the interface between the ferromagnet and the conductor. We predict \textit{Hall-type/transverse} and…

Mesoscale and Nanoscale Physics · Physics 2026-01-12 Ping Li , Chengyuan Cai , Tao Yu

The transmission of a dipole-dominated spin wave in a ferromagnetic film through a localised inhomogeneity in the form of a magnetic field produced by a dc current through a wire placed on the film surface was studied experimentally and…

Materials Science · Physics 2009-03-05 M. P. Kostylev , A. A. Serga , T. Schneider , B. Leven , B. Hillebrands , R. L. Stamps

The chiral magnetic effect (CME) -- a macroscopic manifestation of the quantum chiral anomaly -- induces currents along magnetic field lines, facilitating mutual conversion between chiral asymmetry and magnetic helicity. Although the finite…

High Energy Astrophysical Phenomena · Physics 2025-09-16 Clara Dehman , José A. Pons

We investigate the real-time dynamics of the chiral magnetic effect in quantum electrodynamics (QED) and quantum chromodynamics (QCD). We consider a field configuration of parallel (chromo)electric and (chromo)magnetic fields with a weak…

High Energy Physics - Theory · Physics 2015-03-20 Harmen J. Warringa

Weyl semimetals realize massless relativistic fermions with two Weyl nodes separated in energy and momentum space, whose low-energy physics is described by Dirac fermions with an axial gauge constant. Here, we study their electromagnetic…

Mesoscale and Nanoscale Physics · Physics 2023-01-10 Tatsuya Amitani , Yusuke Nishida

For systems with charged chiral fermions, the imbalance of chirality in the presence of magnetic field generates an electric current - this is the Chiral Magnetic Effect (CME). We study the dynamical real-time evolution of electromagnetic…

High Energy Physics - Theory · Physics 2016-01-29 Yuji Hirono , Dmitri Kharzeev , Yi Yin

In quark-gluon plasma nonzero chirality can be induced by the chiral anomaly. When a magnetic field is applied to a system with nonzero chirality an electromagnetic current is induced along the magnetic field. This phenomenon is called the…

High Energy Physics - Theory · Physics 2011-03-02 A. V. Sadofyev , M. V. Isachenkov

In this Article we discuss a micromagnetic modelling approach to describe the ultrafast spin-transfer torque excitation of coherent and incoherent magnons on the nanoscale. Implementing the action of a femtosecond spin current pulse…

Mesoscale and Nanoscale Physics · Physics 2018-09-12 Henning Ulrichs , Ilya Razdolski

We discuss the excitation of a chiral dipolar mode in an achiral silicon nanoparticle. In particular, we make use of the electric and magnetic polarizabilities of the silicon nanoparticle to construct this chiral electromagnetic mode which…

Optics · Physics 2018-08-09 Jörg S. Eismann , Martin Neugebauer , Peter Banzer

Realization of novel topological phases in magnonic band structures represents a new opportunity for the development of spintronics and magnonics with low power consumption. In this work, we show that in antiparallelly aligned magnetic…

Mesoscale and Nanoscale Physics · Physics 2024-04-16 Zhongqiang Hu , Liang Fu , Luqiao Liu

The interaction between electron spin and molecular chirality plays a fundamental role in quantum phenomena, with significant implications for spintronics and quantum computing. The chirality-induced spin selectivity (CISS) effect, where…

Anomaly-induced transport phenomena in presence of strong external electromagnetic fields are explored within a 4D field theory defined holographically as $U(1)_V\times U(1)_A$ Maxwell-Chern-Simons theory in Schwarzschild-$AdS_5$. Two…

High Energy Physics - Theory · Physics 2019-06-05 Yanyan Bu , Tuna Demircik , Michael Lublinsky

We demonstrate that chiral transport in a strongly magnetized electron-positron plasma can arise dynamically from dissipative pair-creation processes encoded in the imaginary part of the photon polarization tensor within one-loop…

High Energy Physics - Phenomenology · Physics 2026-05-11 J. L. Acosta Avalo , S. Montesino Castillo , E. E. García Reynaldo

A simple model of chiral asymmetry is proposed to interpret the origin of the strong toroidal magnetic field. The electrons relevant to dynamics forming the the field are in a quantume degenerate state with ultra-relativistic Fermi energy.…

Nuclear Theory · Physics 2020-12-11 Naoki Onishi , Tomoyuki Maruyama

Magnetometry and magnetoresistance measurements in MnSi thin films and rigorous analytical solutions of the micromagnetic equations show that the field-induced unwinding of confined helicoids occurs via discrete steps. A comparison between…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 M. N. Wilson , E. A. Karhu , D. P. Lake , A. S. Quigley , A. N. Bogdanov , U. K. Rößler , T. L. Monchesky

Materials with charged chiral quasiparticles in external parallel electric and magnetic fields can support an electric current that grows linearly in time, corresponding to diverging DC conductivity. From experimental viewpoint, this…

High Energy Physics - Phenomenology · Physics 2017-04-05 Dmitri E. Kharzeev

In 1996, Berger and Slonczewski independently predicted that a large enough spin-polarized dc current density sent perpendicularly through a ferromagnetic layer could produce magnetic excitations (spin-waves) or reversal of magnetization…

Materials Science · Physics 2009-11-10 J. Bass , S. Urazhdin , Norman O. Birge , W. P. Pratt
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