Inelastic electron tunneling spectra of MgO-based magnetic tunnel junctions with different electrode designs
Drewello V, Schäfers M, Schebaum O, Khan AA, Münchenberger J, Schmalhorst J-M, Reiss G, Thomas A (2009)
PHYSICAL REVIEW B 79(17): 174417.
Zeitschriftenaufsatz
| Veröffentlicht | Englisch
Download
Es wurden keine Dateien hochgeladen. Nur Publikationsnachweis!
Autor*in
Einrichtung
Abstract / Bemerkung
MgO-based magnetic tunnel junctions with up to 230% tunnel magnetoresistance ratio at room temperature and up to 345% at 13 K are prepared. The lower electrode is either exchange-biased or free, while the top electrode is free or an exchanged-biased artificial ferrimagnet, respectively. Additionally, a pseudo-spin-valve (hard-soft switching) design with two unpinned electrodes is used. Inelastic electron-tunneling spectra for each of these systems show a strong variation in the zero-bias anomaly with a reduced peak for some of the junctions. At voltages around 200 mV additional structures are found, which are not known from junctions with lower magneto resistance, such as alumina-based junctions. We discuss the spectra for the different electrode types and compare our findings with respect to barrier material and magnetoresistance ratio.
Stichworte
structure;
magnesium compounds;
ferrimagnetic materials;
tunnelling magnetoresistance;
magnetic;
tunnelling spectra;
electrodes
Erscheinungsjahr
2009
Zeitschriftentitel
PHYSICAL REVIEW B
Band
79
Ausgabe
17
Art.-Nr.
174417
ISSN
1098-0121
eISSN
1550-235X
Page URI
https://pub.uni-bielefeld.de/record/1633643
Zitieren
Drewello V, Schäfers M, Schebaum O, et al. Inelastic electron tunneling spectra of MgO-based magnetic tunnel junctions with different electrode designs. PHYSICAL REVIEW B. 2009;79(17): 174417.
Drewello, V., Schäfers, M., Schebaum, O., Khan, A. A., Münchenberger, J., Schmalhorst, J. - M., Reiss, G., et al. (2009). Inelastic electron tunneling spectra of MgO-based magnetic tunnel junctions with different electrode designs. PHYSICAL REVIEW B, 79(17), 174417. https://doi.org/10.1103/PhysRevB.79.174417
Drewello, Volker, Schäfers, Markus, Schebaum, Oliver, Khan, Ayaz Arif, Münchenberger, Jana, Schmalhorst, Jan-Michael, Reiss, Günter, and Thomas, Andy. 2009. “Inelastic electron tunneling spectra of MgO-based magnetic tunnel junctions with different electrode designs”. PHYSICAL REVIEW B 79 (17): 174417.
Drewello, V., Schäfers, M., Schebaum, O., Khan, A. A., Münchenberger, J., Schmalhorst, J. - M., Reiss, G., and Thomas, A. (2009). Inelastic electron tunneling spectra of MgO-based magnetic tunnel junctions with different electrode designs. PHYSICAL REVIEW B 79:174417.
Drewello, V., et al., 2009. Inelastic electron tunneling spectra of MgO-based magnetic tunnel junctions with different electrode designs. PHYSICAL REVIEW B, 79(17): 174417.
V. Drewello, et al., “Inelastic electron tunneling spectra of MgO-based magnetic tunnel junctions with different electrode designs”, PHYSICAL REVIEW B, vol. 79, 2009, : 174417.
Drewello, V., Schäfers, M., Schebaum, O., Khan, A.A., Münchenberger, J., Schmalhorst, J.-M., Reiss, G., Thomas, A.: Inelastic electron tunneling spectra of MgO-based magnetic tunnel junctions with different electrode designs. PHYSICAL REVIEW B. 79, : 174417 (2009).
Drewello, Volker, Schäfers, Markus, Schebaum, Oliver, Khan, Ayaz Arif, Münchenberger, Jana, Schmalhorst, Jan-Michael, Reiss, Günter, and Thomas, Andy. “Inelastic electron tunneling spectra of MgO-based magnetic tunnel junctions with different electrode designs”. PHYSICAL REVIEW B 79.17 (2009): 174417.
Export
Markieren/ Markierung löschen
Markierte Publikationen
Web of Science
Dieser Datensatz im Web of Science®Suchen in
Google Scholar