Abstract
We measured the shot noise in the CoFeB/MgO/CoFeB-based magnetic tunneling junctions with a high tunneling magnetoresistance ratio (over 200% at 3 K). Although the Fano factor in the antiparallel configuration is close to unity, it is observed to be typically 0.91±0.01 in the parallel configuration. It indicates the sub-Poissonian process of the electron tunneling in the parallel configuration due to the relevance of the spin-dependent coherent transport in the low bias regime.
Original language | English |
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Article number | 202103 |
Journal | Applied Physics Letters |
Volume | 98 |
Issue number | 20 |
DOIs | |
Publication status | Published - 2011 May 16 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)