| Zugriffsnummer | 41377 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Excitation and coherent control of magnetization dynamics in magnetic tunnel junctions using acoustic pulses |
| Autor(in); Institution |
Yang, Hangfu; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Garcia-Sanchez, Felipe; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY
Hu, Xiukun; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Sievers, Sibylle; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Böhnert, T.; International Iberian Nanotechnology Laboratory, Braga, PORTUGAL
Costa, J. D.; International Iberian Nanotechnology Laboratory, Braga, PORTUGAL
Tarequzzaman, M.; International Iberian Nanotechnology Laboratory, Braga, PORTUGAL
Ferreira, R.; International Iberian Nanotechnology Laboratory, Braga, PORTUGAL
Bieler, Mark; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Schumacher, Hans Werner; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
|
| Quelle/Jahr | Applied Physics Letters: 113 (2018), 7, 1 - 5 |
| Artikelnummer | 072403 |
| ISSN | 0003-6951 (PRINT) ; 1077-3118 (ONLINE) |
| DOI | |
| Verlag | Melville, NY: AIP Publishing |
| Zusammenfassung | We experimentally study magnetization dynamics in magnetic tunnel junctions driven by femtosecond-laser-induced surface acoustic waves. The acoustic pulses induce a magnetization precession in the free layer of the magnetic tunnel junction through magnetoelastic coupling. The frequency and amplitude of the precession shows a pronounced dependence on the applied magnetic field and the laser excitation position. Comparing the acoustic-wave-induced precession frequencies with precession induced by charge currents and with micromagnetic simulations we identify spatially non-uniform magnetization modes localized close the edge regions as being responsible for the optically induced magnetization dynamics. The experimental scheme even allows us to coherently control the magnetization precession using two acoustic pulses. This might prove important for future applications requiring ultrafast spin manipulation. Additionally, our results directly pinpoint the importance of acoustic pulses since they could be relevant when investigating optically-induced temperature effects in magnetic structures. |
| Themenbereich der Metrologie | Elektrizität und Magnetismus |
| Forschungsprojekt | EXL04: SpinCal: Spintronics and spin-caloritronics in magnetic nanosystems |
| Förderinformationen (1) |
Förderername: European Commission (EC)
Förderer ID: 0000 0001 2242 8989 Förderer ID Typ: ISNI Förderprogramm: EMRP 2012 Open Excellence Titel der Förderung: EXL04: SpinCal: Spintronics and spin-caloritronics in magnetic nanosystems Förderungsnummer: EXL04 |
Zitierung
Yang, H., Garcia-Sanchez, F., Hu, X., Sievers, S., Böhnert, T., Costa, J. D., Tarequzzaman, M., Ferreira, R., Bieler, M., & Schumacher, H. W. (2018). Excitation and coherent control of magnetization dynamics in magnetic tunnel junctions using acoustic pulses. Applied Physics Letters, 113(7), 1–5. https://doi.org/10.1063/1.5037780