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 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.

Nyckelord

magnetoresistance

thin films-trilayer

tunneling

room-temperature

point contacts

junctions

magnetoresistance

metal

nanocontacts

resistance

barriers

transition

quality

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)