Tuning the laser-induced ultrafast demagnetization of transition metals
نویسندگان
چکیده
منابع مشابه
Laser-induced ultrafast demagnetization in ferromagnetic metals.
The laser-induced femtosecond demagnetization in ferromagnetic metals is investigated theoretically. Different from the conventional nanosecond one, this ultrafast demagnetization is a cooperative effect of the external laser field and the internal spin-orbit coupling. The spin-orbit coupling smears out the original identities of triplets and singlets while the laser field uses it as an avenue ...
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Ultrafast laser-induced magnetization dynamics in ferromagnetic thin films were measured using a femtosecond Ti:sapphire laser in a pump-probe magneto-optic Kerr effect setup. The effect of plasmon resonance on the transient magnetization was investigated by drop-coating the ferromagnetic films with dimensionally-tuned gold nanorods supporting longitudinal surface plasmon resonance near the cen...
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Femtosecond magnetization phenomena have been challenging our understanding for over a decade. Most experiments have relied on infrared femtosecond lasers, limiting the spatial resolution to a few micrometres. With the advent of femtosecond X-ray sources, nanometric resolution can now be reached, which matches key length scales in femtomagnetism such as the travelling length of excited 'hot' el...
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Does the excitation of ultrafast magnetization require direct interaction between the photons of the optical pump pulse and the magnetic layer? Here, we demonstrate unambiguously that this is not the case. For this we have studied the magnetization dynamics of a ferromagnetic cobalt/palladium multilayer capped by an IR-opaque aluminum layer. Upon excitation with an intense femtosecond-short IR ...
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Emrah Turgut,1 Dmitriy Zusin,1 Dominik Legut,2,3 Karel Carva,3,4 Ronny Knut,1 Justin M. Shaw,5 Cong Chen,1 Zhensheng Tao,1 Hans T. Nembach,5 Thomas J. Silva,5 Stefan Mathias,6 Martin Aeschlimann,7 Peter M. Oppeneer,4 Henry C. Kapteyn,1 Margaret M. Murnane,1 and Patrik Grychtol1 1Department of Physics and JILA, University of Colorado, Boulder, Colorado 80309, USA 2IT4Innovations Center, VSB Tech...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2019
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.100.024402