Journal
APPLIED PHYSICS LETTERS
Volume 111, Issue 23, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5007202
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- University Grants Commission, India
- Department of Electronics and Information Technology (DeitY)
- Department of Science and Technology (DST), Government of India
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We perform spin torque ferromagnetic resonance measurements on the Si(100)/TiN(100)/epi-Py(100)/beta-Ta system. We demonstrate current induced modulation of the Gilbert damping constant, which is about 30% for a current density of 6.25 x 10(9) A/m(2). We show that the observed modulation of the Gilbert damping constant cannot be explained by spin transfer torques arising from the spin Hall effect of the beta-Ta layer. An additional mechanism such as antidamping spinorbit torque resulting from the interface or the crystalline structure of Py thin films needs to be considered. Published by AIP Publishing.
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