Abstract
We measured differential conductance spectra of magnetic tunnel junctions (MTJs) with thin MgO barrier and low-resistance area product. The spectra of MTJs with MgO barrier thicker than 1.05 nm were essentially the same except for slight decrease of contributions from low-energy excitations, such as magnons. The spectra of MTJ with 1.01 nm MgO barrier were thoroughly different from the MTJs with thicker barrier. The result reveals that an MTJ with very thin MgO barrier thickness has different conduction characteristics from those with thicker MgO barriers.
Original language | English |
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Pages (from-to) | e649-e651 |
Journal | Journal of Magnetism and Magnetic Materials |
Volume | 310 |
Issue number | 2 SUPPL. PART 3 |
DOIs | |
Publication status | Published - 2007 Mar |
Externally published | Yes |
Keywords
- Electric band structure
- Electronic transport
- Magnetic film and multilayer
- Tunneling
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics