| Zugriffsnummer | 31097 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Magnetotransport and magnetization dynamics of GaMnAs thin films and magnetic tunnel junctions |
| Autor(in); Institution |
Ben Hamida, Aymen; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Sievers, Sibylle; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Bergmann, Florian; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Racu, Ana-Maria; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Bieler, Mark; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Pierz, Klaus; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Schumacher, Hans Werner; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
|
| Quelle/Jahr | Physica Status Solidi B: 251 (2014), 9, 1652 - 1662 |
| ISSN | 0370-1972 (PRINT) ; 1521-3951 (ONLINE) |
| DOI | |
| Verlag | Weinheim: Wiley-VCH |
| Freie Schlagworte | ferromagnetic resonances ; GaMnAs ; Hall effect ; magneto-optical properties ; magnetotransport ; molecular beam epitaxy |
| Zusammenfassung | We describe the comprehensive characterization of GaMnAs epitaxial thin films and magnetic tunnel junctions (MTJ) by complementary techniques ranging from high-resolution imaging to magnetometry, magnetotransport, time-resolved magneto-optics, and coplanar broadband ferromagnetic resonance (FMR). Magnetometry and magnetotransport on macroscopic samples allow deriving the saturation magnetization and quasi-static reversal fields. Perpendicular transport experiments on patterned MTJ pillars further reveal the tunneling magnetoresistance ratio. Additionally the precessional dynamics are characterized by time-resolved magneto-optics and broadband network analyzer FMR yielding the effective Gilbert damping and the sample anisotropies. The combination of the different techniques allows a comprehensive characterization of the key magnetostatic and dynamic material parameters of GaMnAs-based thin films and devices. |
Zitierung
Ben Hamida, A., Sievers, S., Bergmann, F., Racu, A.-M., Bieler, M., Pierz, K., & Schumacher, H. W. (2014). Magnetotransport and magnetization dynamics of GaMnAs thin films and magnetic tunnel junctions. Physica Status Solidi B, 251(9), 1652–1662. https://doi.org/10.1002/pssb.201350210