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ORIGINAL RESEARCH article

Front. Phys.
Sec. Condensed Matter Physics
Volume 12 - 2024 | doi: 10.3389/fphy.2024.1354870
This article is part of the Research Topic

High speed spintronics from MHz to THz

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Ultrafast light-induced magnetization in non-magnetic films: from orbital and spin Hall phenomena to the inverse Faraday effect Provisionally Accepted

Hanan Hamamera1 Filipe S. Guimarães2 Manuel Dos Santos Dias3 Samir Lounis1*
  • 1Peter Grünberg Institute, Julich Research Center, Helmholtz Association of German Research Centres (HZ), Germany
  • 2Jülich Supercomputing Center, Institute for Advanced Simulation, Julich Research Center, Helmholtz Association of German Research Centers (HZ), Germany
  • 3Daresbury Laboratory, Science & Technologies Facilities Council, United Kingdom Research and Innovation, United Kingdom

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The field of orbitronics has emerged with great potential to impact information technology by enabling environmentally friendly electronic devices. The main electronic degree of freedom at play is the orbital angular momentum, which can give rise to a myriad of phenomena such as the orbital Hall effect (OHE), torques and orbital magnetoelectric effects. Here, we explore via realistic time-dependent electronic structure simulations the magnetic response of a non-magnetic material, an ultrathin Pt film, to ultrafast laser pulses of different polarizatons and helicities. We demonstrate the generation of significant orbital and spin magnetizations and identify the underlying mechanisms consisting of the interplay of the OHE,

Keywords: Ultrafast dynamics, Spin and orbital magnetisation, light-matter interaction, Orbitronics, Inverse Faraday effect, Spin and orbital Hall effects

Received: 13 Dec 2023; Accepted: 30 Apr 2024.

Copyright: © 2024 Hamamera, Guimarães, Dos Santos Dias and Lounis. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Prof. Samir Lounis, Peter Grünberg Institute, Julich Research Center, Helmholtz Association of German Research Centres (HZ), Jülich, 52428, North Rhine-Westphalia, Germany