Role of magnetic circular dichroism in all-optical magnetic recording
A.R. Khorsand,Matteo Savoini,Andrei Kirilyuk,Alexey Kimel,Arata Tsukamoto,Arata Tsukamoto,Akiyoshi Itoh,Theo Rasing +7 more
Reads0
Chats0
TLDR
It is shown that all-optical switching with polarized femtosecond laser pulses in ferrimagnetic GdFeCo is subjected to a threshold fluence absorbed in the magnetic layer, independent of either the excitation wavelength or the polarization of the laser pulse.Abstract:
Using magneto-optical microscopy in combination with ellipsometry measurements, we show that all-optical switching with polarized femtosecond laser pulses in ferrimagnetic GdFeCo is subjected to a threshold fluence absorbed in the magnetic layer, independent of either the excitation wavelength or the polarization of the laser pulse. Furthermore, we present a quantitative explanation of the intensity window in which all-optical helicity-dependent switching (AO-HDS) occurs, based on magnetic circular dichroism. This explanation is consistent with all the experimental findings on AO-HDS so far, varying from single- to multiple-shot experiments. The presented results give a solid understanding of the origin of AO-HDS, and give novel insights into the physics of ultrafast, laser controlled magnetism.read more
Citations
More filters
Journal ArticleDOI
Interface-induced phenomena in magnetism
Frances Hellman,Axel Hoffmann,Yaroslav Tserkovnyak,Geoffrey S. D. Beach,Eric E. Fullerton,Chris Leighton,Allan H. MacDonald,Daniel C. Ralph,Dario Arena,Hermann A. Dürr,Peter Fischer,Julie Grollier,Joseph P. Heremans,Tomas Jungwirth,Tomas Jungwirth,Alexey Kimel,B Bert Koopmans,Ilya Krivorotov,Steven J. May,Amanda K. Petford-Long,James M. Rondinelli,Nitin Samarth,Ivan K. Schuller,Ivan K. Schuller,Andrei Slavin,Mark D. Stiles,Oleg Tchernyshyov,André Thiaville,Barry L. Zink +28 more
TL;DR: This article reviews static and dynamic interfacial effects in magnetism, focusing on interfacially-driven magnetic effects and phenomena associated with spin-orbit coupling and intrinsic symmetry breaking at interfaces, identifying the most exciting new scientific results and pointing to promising future research directions.
Journal ArticleDOI
All-optical control of ferromagnetic thin films and nanostructures
C-H Lambert,C-H Lambert,Stéphane Mangin,Stéphane Mangin,B. S. D. Ch. S. Varaprasad,Yukiko Takahashi,Michel Hehn,Mirko Cinchetti,Gregory Malinowski,Kazuhiro Hono,Yeshaiahu Fainman,Martin Aeschlimann,Eric E. Fullerton +12 more
TL;DR: This work demonstrates optical control of ferromagnetic materials ranging from magnetic thin films to multilayers and even granular films being explored for ultra-high-density magnetic recording, and shows that Optical control of magnetic materials is a much more general phenomenon than previously assumed.
Journal ArticleDOI
Laser-induced magnetization dynamics and reversal in ferrimagnetic alloys.
TL;DR: Optical manipulation of magnetic order by femtosecond laser pulses has developed into an exciting and still expanding research field that keeps being fueled by a continuous stream of new and sometimes counterintuitive results, which may also potentially revolutionize data storage and information processing technologies.
Journal ArticleDOI
Ultrafast nonthermal photo-magnetic recording in a transparent medium
TL;DR: This work describes ultrafast all-optical photo-magnetic recording in transparent films of the dielectric cobalt-substituted garnet, which outperforms existing alternatives in terms of the speed of the write–read magnetic recording event and the unprecedentedly low heat load.
Journal ArticleDOI
Writing magnetic memory with ultrashort light pulses
Alexey Kimel,Mo Li +1 more
TL;DR: In this paper, the authors explored ultrafast all-optical switching (AOS) of magnetization as the least-dissipative and fastest method for magnetic writing.
References
More filters
Journal ArticleDOI
Ultrafast spin dynamics in ferromagnetic nickel.
TL;DR: The relaxation processes of electrons and spins systems following the absorption of femtosecondoptical pulses in ferromagnetic nickel have been studied using optical and magneto-optical pump-probetechniques and the experimental results are adequately described by a model including three interacting reservoirs.
Journal ArticleDOI
Simple technique for measurements of pulsed Gaussian-beam spot sizes.
TL;DR: The thresholds for several effects in picosecondlaser-induced phase transformation on silicon-crystal surfaces are calibrated with a simple technique for in situ measurements of pulsed Gaussian-beam spot sizes.
Journal ArticleDOI
Ultrafast optical manipulation of magnetic order
TL;DR: In this article, the authors review the progress in this field of laser manipulation of magnetic order in a systematic way and show that the polarization of light plays an essential role in the manipulation of the magnetic moments at the femtosecond time scale.
Journal ArticleDOI
All-optical magnetic recording with circularly polarized light.
C.D. Stanciu,Fredrik Hansteen,Alexey Kimel,Andrei Kirilyuk,Arata Tsukamoto,Akiyoshi Itoh,Theo Rasing +6 more
TL;DR: It is experimentally demonstrate that the magnetization can be reversed in a reproducible manner by a single 40 femtosecond circularly polarized laser pulse, without any applied magnetic field, revealing an ultrafast and efficient pathway for writing magnetic bits at record-breaking speeds.
Journal ArticleDOI
Ultrafast non-thermal control of magnetization by instantaneous photomagnetic pulses.
TL;DR: It is demonstrated that circularly polarized femtosecond laser pulses can be used to non-thermally excite and coherently control the spin dynamics in magnets by way of the inverse Faraday effect, and offers prospects for applications of ultrafast lasers in magnetic devices.
Related Papers (5)
Ultrafast heating as a sufficient stimulus for magnetization reversal in a ferrimagnet.
Thomas Ostler,Joseph Barker,Richard F. L. Evans,Roy W. Chantrell,Unai Atxitia,Oksana Chubykalo-Fesenko,S. El Moussaoui,L. Le Guyader,E. Mengotti,Laura J. Heyderman,F. Nolting,Arata Tsukamoto,Akiyoshi Itoh,D. Afanasiev,Boris A. Ivanov,Alexandra M. Kalashnikova,K. Vahaplar,J.H. Mentink,Andrei Kirilyuk,Theo Rasing,Alexey Kimel +20 more