Criteria for ferromagnetic–insulator–ferromagnetic tunneling
2002; Elsevier BV; Volume: 240; Issue: 1-3 Linguagem: Inglês
10.1016/s0304-8853(01)00712-0
ISSN1873-4766
AutoresJohan Åkerman, R. Escudero, Chris Leighton, Songkil Kim, David Rabson, R. W. Dave, J. M. Slaughter, Iván K. Schuller,
Tópico(s)Physics of Superconductivity and Magnetism
ResumoThe 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.
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