Magnetic anisotropy, damping, and interfacial spin transport in Pt/LSMO bilayers

Lee, H. K.; Barsukov, I.; Swartz, A. G.; Kim, B.; Yang, L.; Hwang, H. Y.; Krivorotov, I. N.

doi:10.1063/1.4950971

Title: Magnetic anisotropy, damping, and interfacial spin transport in Pt/LSMO bilayers

Journal Article · Mon May 16 00:00:00 EDT 2016 · AIP Advances

DOI:https://doi.org/10.1063/1.4950971· OSTI ID:1272359

Lee, H. K. ^[1]; Barsukov, I. ^[1]; Swartz, A. G. ^[2]; Kim, B. ^[2]; Yang, L. ^[1]; Hwang, H. Y. ^[3]; Krivorotov, I. N. ^[1]

Univ. of California, Irvine, CA (United States)
Stanford Univ., Stanford, CA (United States)
Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)

In this paper, we report ferromagnetic resonance measurements of magnetic anisotropy and damping in epitaxial La_0.7Sr_0.3MnO₃ (LSMO) and Pt capped LSMO thin films on SrTiO₃ (001) substrates. The measurements reveal large negative perpendicular magnetic anisotropy and a weaker uniaxial in-plane anisotropy that are unaffected by the Pt cap. The Gilbert damping of the bare LSMO films is found to be low α = 1.9(1) × 10^-3, and two-magnon scattering is determined to be significant and strongly anisotropic. The Pt cap increases the damping by 50% due to spin pumping, which is also directly detected via inverse spin Hall effect in Pt. Our research demonstrates efficient spin transport across the Pt/LSMO interface.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Energy Frontier Research Centers (EFRC) (United States). Spins and Heat in Nanoscale Electronic Systems (SHINES)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0012670

OSTI ID:: 1272359

Journal Information:: AIP Advances, Vol. 6, Issue 5; ISSN 2158-3226

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 30 works

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