| Zugriffsnummer | 28381 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Determination of spin-dependent Seebeck coefficients of CoFeB/MgO/CoFeB magnetic tunnel junction nanopillars |
| Autor(in); Institution |
Liebing, Niklas; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Serrano-Guisan, Santiago; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Rott, K.; University of Bielefeld, Department of Physics, Bielefeld, GERMANY
Reiss, G.; University of Bielefeld, Department of Physics, Bielefeld, GERMANY
Langer, J.; Singulus AG, Kahl am Main, GERMANY
Ocker, B.; Singulus AG, Kahl am Main, GERMANY
Schumacher, Hans Werner; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
|
| Quelle/Jahr | Journal of Applied Physics: 111 (2012), 07C520-1 - 07C520-3 |
| ISSN | 0021-8979 |
| DOI | |
| URL | |
| Verlag | Melville, NY: American Institute of Physics |
| Klassifikationscode | PACS: 81.07.-b ; PACS: 75.75.-c ; PACS: 75.50.Tt ; PACS: 75.47.-m ; PACS: 75.40.Mg ; PACS: 73.40.Rw |
| Zusammenfassung | We investigate the spin-dependent Seebeck coefficient and the tunneling magneto thermopower (TMTP) of CoFeB/MgO/CoFeB magnetic tunnel junctions (MTJ) in the presence of thermal gradients across the MTJ. The thermo power voltage VTP across the MTJ is found to scale linearly with the heating power and reveals similar field dependence as the tunnel magnetoresistance (TMR). Based on calibration measurements and finite element simulations of the heat flux, the thermal gradient and large spin-dependent Seebeck coefficients of the order of (240±110) μV/K are derived. From additional measurements on MTJs after dielectric breakdown, a TMR up to 90% and Seebeck coefficients up to 650 μV/K can be derived. |
Zitierung
Liebing, N., Serrano-Guisan, S., Rott, K., Reiss, G., Langer, J., Ocker, B., & Schumacher, H. W. (2012). Determination of spin-dependent Seebeck coefficients of CoFeB/MgO/CoFeB magnetic tunnel junction nanopillars. Journal of Applied Physics, 111, 07C520-1–07C520-3. https://doi.org/10.1063/1.3679769