Journal
JOURNAL OF APPLIED PHYSICS
Volume 130, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/5.0051905
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Funding
- U.S. National Science Foundation [CCF-1816406, CCF-1815033]
- National Science Foundation through the National Nanotechnology Coordinated Infrastructure (NNCI) [ECCS-2025124]
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Applying a surface acoustic wave (SAW) across the terminals of a magnetic tunnel junction (MTJ) decreases both the parallel and antiparallel resistances of the MTJ, with a larger decrease in the latter. However, the coercivities of the free and fixed layers of the MTJ remain unaffected, indicating that the SAW does not cause significant magnetization rotation in the magnetic layers. This study sheds light on the dynamic behavior of an MTJ under periodic compressive and tensile strain.
We show that a surface acoustic wave (SAW) applied across the terminals of a magnetic tunnel junction (MTJ) decreases both the (time-averaged) parallel and antiparallel resistances of the MTJ, with the latter decreasing much more than the former. This results in a decrease in the tunneling magnetoresistance ratio. The coercivities of the free and fixed layers of the MTJ, however, are not affected significantly, suggesting that the SAW does not cause large-angle magnetization rotation in the magnetic layers through the inverse magnetostriction (Villari) effect at the power levels used. This study sheds light on the dynamical behavior of an MTJ under periodic compressive and tensile strain.
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