The Landau-Lifshitz equation in atomistic models

Autor: Ellis, M. O. A., Evans, R. F. L., Ostler, T. A., Barker, J., Atxitia, U., Chubykalo-Fesenko, O., Chantrell, R. W.

The Landau-Lifshitz (LL) equation, originally proposed at the macrospin level, is increasingly used in Atomistic Spin Dynamic (ASD) models. The models are based on a spin Hamiltonian featuring atomic spins of fixed length, with the exchange introduce

Externí odkaz: http://arxiv.org/abs/1505.07367

Ultrafast dynamical path for the switching of a ferrimagnet after femtosecond heating

Autor: Atxitia, U., Ostler, T., Barker, J., Evans, R. F. L., Chantrell, R. W., Chubykalo-Fesenko, O.

Ultrafast laser-induced magnetic switching in rare earth, transition metal ferrimagnetic alloys has recently been reported to occur by ultrafast heating alone. Using atomistic simulations and a ferrimagnetic Landau-Lifshitz-Bloch formalism, we demons

Externí odkaz: http://arxiv.org/abs/1207.4092

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Spin-current-mediated rapid magnon localisation and coalescence after ultrafast optical pumping of ferrimagnetic alloys

Autor: Iacocca, E., Liu, T.-M., Reid, A. H., Fu, Z., Ruta, S., Granitzka, P. W., Jal, E., Bonetti, S., Gray, A. X., Graves, C. E., Kukreja, R., Chen, Z., Higley, D. J., Chase, T., Le Guyader, L., Hirsch, K., Ohldag, H., Schlotter, W. F., Dakovski, G. L., Coslovich, G., Hoffmann, M. C., Carron, S., Tsukamoto, A., Kirilyuk, A., Kimel, A. V., Rasing, Th., Stöhr, J., Evans, R. F. L., Ostler, T., Chantrell, R. W., Hoefer, M. A., Silva, T. J., Dürr, H. A.

Publikováno v: Nature Communications, 10, 1, pp. 1756
Nature communications, vol 10, iss 1
Nature Communications
Nature Communications, 10, 1756
Nature Communications, Vol 10, Iss 1, Pp 1-11 (2019)

Sub-picosecond magnetisation manipulation via femtosecond optical pumping has attracted wide attention ever since its original discovery in 1996. However, the spatial evolution of the magnetisation is not yet well understood, in part due to the diffi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::4eddc586d2d3e956a6a85a564a1428f8
https://nrl.northumbria.ac.uk/id/eprint/40687/1/s41467-019-09577-0.pdf