Results 51 to 60 of about 92,951 (162)

Theory of Femtosecond Laser-Induced Demagnetization

, 2014
Using ab initio calculations we computed the ultrafast demagnetization that can be achieved by Elliott-Yafet electron-phonon spin-flip scatterings in laser-excited ferromagnets.
Carva, Karel,, Battiato, Marco, Legut, Dominik, Carva, Karel, Marco Battiato, Battiato, Marco,, Oppeneer, Peter M., Peter M. Oppeneer, Oppeneer, Peter M.,, Karel Carva, Dominik Legut   +10 more
core   +1 more source

Explaining the paradoxical diversity of ultrafast laser-induced demagnetization

Nature Materials, 2009
Pulsed-laser-induced quenching of ferromagnetic order has intrigued researchers since pioneering works in the 1990s. It was reported that demagnetization in gadolinium proceeds within 100 ps, but three orders of magnitude faster in ferromagnetic transition metals such as nickel.
Koopmans, B, Malinowski, Grégory, Dalla Longa, F, Steiauf, D, Fähnle, M, Roth, T, Cinchetti, M, Aeschlimann, M   +7 more
openaire   +4 more sources

Optimal control of laser-induced spin–orbit mediated ultrafast demagnetization

New Journal of Physics, 2016
Laser induced ultrafast demagnetization is the process whereby the magnetic moment of a ferromagnetic material is seen to drop significantly on a timescale of 10–100 s of femtoseconds due to the application of a strong laser pulse. If this phenomenon can
P Elliott, K Krieger, J K Dewhurst, S Sharma, E K U Gross   +4 more
doaj   +1 more source

Terahertz Emission Spectroscopy of Ultrafast Coupled Spin and Charge Dynamics in Nanometer Ferromagnetic Heterostructures

Nanomaterials, 2022
Due to its high sensitivity and because it does not rely on the magneto-optical response, terahertz (THz) emission spectroscopy has been used as a powerful time-resolved tool for investigating ultrafast demagnetization and spin current dynamics in ...
Zhangshun Li, Yexin Jiang, Zuanming Jin, Zhuoyi Li, Xianyang Lu, Zhijiang Ye, Jin-Yi Pang, Yongbing Xu, Yan Peng   +8 more
doaj   +1 more source

Ultrafast Optical Demagnetization manipulates Nanoscale Spin Structure in Domain Walls [PDF]

, 2012
During ultrafast demagnetization of a magnetically ordered solid, angular momentum has to be transferred between the spins, electrons, and phonons in the system on femto and picosecond timescales.
Düsterer, S., Stickler, D., Oepen, H.-P., Al Shemmary, A., Guenther, C. M., Treusch, R., Gruebel, G., Frömter, R., Oepen, H. P., Froemter, R., Vodungbo, B., Pfau, B., Mueller, L., Büttner, F., Grübel, G., Flewett, S., Schlotter, W. F., Kläui, M., Gutt, C., Li, K., Delaunay, R., Guehrs, E., Müller, L., Buettner, F., Schlotter, W.F., Oepen, H.P., Hawaldar, R., Klaeui, M., Geilhufe, J., Günther, C. M., Günther, M., Mohanty, J., Luening, J., Hille, M., Lüning, J., Al-Shemmary, A., Duesterer, S., Büttner, Felix, Schaffert, S., Redlin, H., Kobs, A., Günther, C.M., Jaouen, N., Eisebitt, S., Müller, L. (author), Pfau, B. (author), Al-Shemmary, A. (author), Delaunay, R. (author), Eisebitt, S. (author), Li, K. (author), Treusch, R. (author), Redlin, H. (author), Hawaldar, R. (author), Schaffert, S. (author), Kobs, A. (author), Büttner, F. (author), Jaouen, N. (author), Stickler, D. (author), Oepen, H.P. (author), Lüning, J. (author), Hille, M. (author), Schlotter, W.F. (author), Vodungbo, B. (author), Kläui, M. (author), Geilhufe, J. (author), Flewett, S. (author), Mohanty, J. (author), Gutt, C. (author), Günther, C.M. (author), Guehrs, E. (author), Grübel, G. (author), Frömter, R. (author), Düsterer, S. (author)   +72 more
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Laser induced ultrafast magnetization reversal in TbCo film

AIP Advances, 2017
All optical switching is an emerging recording technology by using femtosecond laser to realize ultrafast magnetization manipulation for super-high magnetic storage.
Weiming Cheng, Xing Li, Haiwei Wang, Xiaomin Cheng, Xiangshui Miao   +4 more
doaj   +1 more source

Ultrafast optical manipulation of magnetic order in ferromagnetic materials

Nano Convergence, 2020
The interaction between ultrafast lasers and magnetic materials is an appealing topic. It not only involves interesting fundamental questions that remain inconclusive and hence need further investigation, but also has the potential to revolutionize data ...
Chuangtang Wang, Yongmin Liu
doaj   +1 more source

Universal field-tunable terahertz emission by ultrafast photoinduced demagnetization in Fe, Ni, and Co ferromagnetic films [PDF]

, 2020
We report a universal terahertz (THz) emission behavior from simple Ni, Fe, and Co metallic ferromagnetic films, triggered by the femtosecond laser pulse and subsequent photoinduced demagnetization on an ultrafast time scale.
Park, Seung-Young, Kim, Dong-Hyun, Lee, Sang-Hyuk, Kim, Seongheun, Choi, Yeon Suk, Kim, Dong Eon, Shim, Je-Ho, Park, Jaehun, Kim, Hyun-Joong, Hong, Jung-Il, Huang, Lin, Kim, Seon-Dae, Shin, Hee Jun, Hee Jun Shin, Seung-Young Park, Seon-Dae Kim, Jung-Il Hong, Dong Eon Kim, Sang-Hyuk Lee, Je-Ho Shim, Hyun-Joong Kim, Yeon Suk Choi, Jaehun Park, Dong-Hyun Kim, Lin Huang, Seongheun Kim   +25 more
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Ultrafast demagnetizing fields from first principles [PDF]

Physical Review B, 2017
We examine the ultrafast demagnetization process of iron-based materials, namely, ${\mathrm{Fe}}_{6}$ clusters and bulk bcc Fe, with time-dependent spin-density functional theory (TDSDFT). The magnetization continuity equation is reformulated and the torque due to the spin-current divergence is written in terms of an effective time-dependent kinetic ...
Jacopo Simoni, Maria Stamenova, Stefano Sanvito   +2 more
openaire   +2 more sources

Stoner versus Heisenberg: Ultrafast exchange reduction and magnon generation during laser-induced demagnetization

, 2016
Understanding how the electronic band structure of a ferromagnetic material is modified during laser-induced demagnetization on femtosecond time scales has been a long-standing question in condensed matter physics.
Carva, Karel,, Carva, Karel, Turgut, Emrah, Mathias, Stefan,, Grychtol, Patrik,, Oppeneer, Peter,, Zusin, Dmitriy, Tao, Zhensheng,, Silva, Thomas J.,, Tao, Zhensheng, Aeschlimann, Martin,, Mathias, Stefan, Kapteyn, Henry C., Grychtol, Patrik, Aeschlimann, Martin, Legut, Dominik,, Knut, Ronny,, Knut, Ronny, Nembach, Hans T.,, Chen, Cong, Chen, Cong,, Murnane, Margaret M.,, Zusin, Dmitriy,, Nembach, Hans T., Turgut, Emrah,, Shaw, Justin M., Murnane, Margaret M., Silva, Thomas J., Legut, Dominik, Oppeneer, Peter M., Kapteyn, Henry C.,, Shaw, Justin M.,   +31 more
core   +1 more source