Results 51 to 60 of about 1,236 (182)

Laser-Induced Forces on Atoms During Ultrafast Demagnetization

SSRN Electronic Journal, 2022
Laser-induced femtosecond demagnetization has attracted a broad attention as a possible candidate for information storage technology. However, whether or not lattice vibration directly participates in demagnetization has been highly controversial over a decade.
G.P. Zhang, Y.H. Bai
openaire   +2 more sources

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.   +43 more
core   +2 more sources

Ultrafast spin demagnetization by nonthermal electrons of TbFe alloy film [PDF]

, 2009
An ultrafast spin demagnetization process of an amorphous Tb(35)Fe(65) alloy film has been investigated by means of an all-optical pump-probe technique.
Jeong, Jae-Woo, Shin, Sung-Chul, Sung-Chul Shin, Ji-Wan Kim, Kim, Ji-Wan, Kyeong-Dong Lee, Jae-Woo Jeong, Lee, Kyeong-Dong   +7 more
core   +1 more source

Nonlocal ultrafast demagnetization dynamics of Co/Pt multilayers by optical field enhancement

New Journal of Physics, 2015
The influence on ultrafast demagnetization dynamics of metallic nano-structured gratings deposited on thin films of magnetic Co/Pt multilayers is investigated by the time-resolved optical Kerr effect.
C von Korff Schmising, M Giovannella, D Weder, S Schaffert, J L Webb, S Eisebitt   +5 more
doaj   +1 more source

Ab Initio Nonadiabatic Molecular Dynamics of Ultrafast Demagnetization in Iron [PDF]

Ultrafast demagnetization in magnetic metals is the key to spintronics devices. Taking iron as a prototypical system, we investigate the demagnetization mechanism by simulating the charge and spin dynamics using nonadiabatic molecular dynamics in the ...
Haoran Lu (6389621), Run Long (1304349)
core   +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 Demagnetization Control in Magnetophotonic Surface Crystals [PDF]

Magnetic memory combining plasmonics and magnetism is poised to dramatically increase the bit density and energy efficiency of light-assisted ultrafast magnetic storage, thanks to nanoplasmon-driven enhancement and confinement of light.
Alexandre Dmitriev (1278720), Kshiti Mishra (14044986), Vassilios Kapaklis (8305236), Andrei Kirilyuk (1409059), Agne Ciuciulkaite (8305221), Alexey V. Kimel (1511626), Richard M. Rowan-Robinson (14044989), Carl S. Davies (14044992)   +7 more
core   +1 more source

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

, 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

Investigation of Ultrafast Demagnetization and Gilbert Damping and their Correlation in Different Ferromagnetic Thin Films Grown Under Identical Conditions [PDF]

, 2023
Following the demonstration of laser-induced ultrafast demagnetization in ferromagnetic nickel, several theoretical and phenomenological propositions have sought to uncover its underlying physics. In this work we revisit the three temperature model (3TM)
Panda, Surya Narayan, Majumder, Sudip, Barman, Anjan, Mukhopadhyay, Suchetana   +3 more
core   +2 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