| Zugriffsnummer | 43410 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | The magnetic tunnel junction as a temperature sensor for buried nanostructures |
| Autor(in); Institution |
Yang, Hangfu; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
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
Tarequzzaman, M.; International Iberian Nanotechnology Laboratory, Braga, PORTUGAL
Costa, J. D.; 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 | Journal of Applied Physics: 124 (2018), 1 - 7 |
| Artikelnummer | 174501 |
| ISSN | 0021-8979 (print) ; 1089-7550 (online) |
| DOI | |
| Verlag | Melville, NY: AIP Publishing |
| Zusammenfassung | The magnetic tunnel junction (MTJ) is an important spintronic device and widely used in storage and sensor applications due to its large tunnel magnetoresistance. Here, we demonstrate that MTJs with an MgO barrier can be used in a straightforward way for accurate and quantitative temperature measurements in buried nanostructures. For this purpose, three intrinsic properties of the MTJ are employed: (i) the temperature dependence of the tunnel resistance, (ii) the temperature dependence of the coercivity of the free layer, and (iii) the temperature dependence of the coercivity of the synthetic antiferromagnet. We compare the three methods for the case in which a metal layer above the MTJ is heated by femtosecond laser pulses and find a good agreement between the different techniques. Our results might contribute to a better understanding of nanoscale thermal transport in multilayer structures for which corresponding simulations are very complicated. Additionally, the developed techniques, which have a high spatial resolution, will be suitable for the study of new physical phenomena where quantitative information about temperature and temperature gradients is required. |
| 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., Hu, X., Sievers, S., Böhnert, T., Tarequzzaman, M., Costa, J. D., Ferreira, R., Bieler, M., & Schumacher, H. W. (2018). The magnetic tunnel junction as a temperature sensor for buried nanostructures. Journal of Applied Physics, 124, 1–7. https://doi.org/10.1063/1.5049890