Abstract
The d2V∕dI2-V measurements were used to investigate the tunneling mechanism in CoFeB∕MgO∕CoFeB magnetic tunnel junctions (MTJs), which showed a giant tunnel magnetoresistance ratio up to 200% at room temperature. The d2V∕dI2-V spectra of CoFeB∕MgO∕CoFeB junctions resemble those of single-crystal Fe(001)∕MgO(001)∕Fe(001) MTJs. Broad peaks appeared around ±600mV in spectra for antiparallel magnetic configurations. A complex structure was apparent in the spectra for parallel configurations. We inferred that giant tunnel magnetoresistance observed in CoFeB∕MgO∕CoFeB junctions originates in coherent tunneling between the Δ1 bands of crystallized CoFeB electrodes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
