Work

Laser-Induced Magnetic Nanostructures with Tunable Topological Properties

Year: 2013

Type: article

Abstract: We report the creation and real-space observation of magnetic structures with well-defined topological properties and a lateral size as low as about 150 nm. They are generated in a thin ferrimagnetic film by ultrashort single optical laser pulses. Thanks to their topological properties, such structures can be classified as Skyrmions of a particular type that does not require an externally applied magnetic field for stabilization. Besides Skyrmions, we are able to generate magnetic features with topological characteristics that can be tuned by changing the laser fluence. The stability of such features is accounted for by an analytical model based on the interplay between the exchange and the magnetic dipole-dipole interactions.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.110.177205

Authors: M. Finazzi, M. Savoini, A. R. Khorsand, A. Tsukamoto, A. Itoh, L. Duò, A. Kirilyuk, Th. Rasing, M. Ezawa

Institutions: National Interuniversity Consortium for the Physical Sciences of Matter, Politecnico di Milano, Radboud University Nijmegen, Nihon University, The University of Tokyo

Language: English

Topic: Magnetic properties of thin films

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: European Commission, Stichting voor Fundamenteel Onderzoek der Materie, Fondazione Cariplo, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Ministero dell’Istruzione, dell’Università e della Ricerca, Japan Society for the Promotion of Science

Awards: Theoretical studies on topological aspects of silicene and related materials, Polarized Optical Near-fields for Data Encoding and Retrieving - PONDER, Theoretical studies of topological and electron correlation effects in graphene, Femtosecond opto-magnetism and novel approaches to ultrafast magnetismat the nanoscale, Ultrafast All-Optical Magnetization Reversal for Magnetic Recording and Laser-Controlled Spintronics, Plasmonica in nanoparticelle metalliche auto-organizzate

OpenAlex ID: W1970492750

FWCI: 8.262

Cites: 23

Cited by: 331

Related to: 10