Tunneling phenomena as a probe to investigate atomic scale fluctuations in Metal/Oxide/Metal magnetic tunnel junctions

• Published in: Physical review letters Vol. 85; no. 4; p. 876
• Main Authors: Da Costa V, Tiusan, C, Dimopoulos, T, Ounadjela, K
• Format: Journal Article
• Language: English
• Published: United States 24.07.2000

Local transport properties of Al2O3 tunnel barriers have been investigated at a nanometric spatial scale with an unconventional near field microscope. Using the tunneling effect, which is extremely sensitive to fluctuations of the barrier parameters (less than 1 to 2 A), a unique method is introduce...