Criteria for ferromagnetic–insulator–ferromagnetic tunneling

Criteria for ferromagnetic–insulator–ferromagnetic tunneling

The Rowell criteria, commonly used to identify tunneling in magnetic tunnel junctions (MTJ), are scrutinized. While neither the exponential-thickness dependence of the conductivity nor fits of non-linear transport data are found to be reliable tunneling criteria, the temperature-dependent conductivi...

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Veröffentlicht in:Journal of magnetism and magnetic materials 2002-02, Vol.240 (1), p.86-91
Hauptverfasser: Åkerman, Johan J., Escudero, R., Leighton, C., Kim, S., Rabson, D.A., Dave, Renu Whig, Slaughter, J.M., Schuller, Ivan K.
Format: Artikel
Sprache:eng
Schlagworte:
barriers
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
junctions
Magnetic properties and materials
Magnetic properties of monolayers and thin films
Magnetic properties of surface, thin films and multilayers
Magnetoresistance
metal
nanocontacts
Physics
point contacts
quality
resistance
room-temperature
Thin films—trilayer
transition
Tunneling
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Zusammenfassung:The Rowell criteria, commonly used to identify tunneling in magnetic tunnel junctions (MTJ), are scrutinized. While neither the exponential-thickness dependence of the conductivity nor fits of non-linear transport data are found to be reliable tunneling criteria, the temperature-dependent conductivity does remain a solid criterion. Based on experimental studies of the bias and temperature-dependent resistance and magnetoresistance of MTJs, with and without shorted barriers, a new set of criteria is formulated.
ISSN:0304-8853
1873-4766
DOI:10.1016/S0304-8853(01)00712-0