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Title: Platinum/yttrium iron garnet inverted structures for spin current transport

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4953454· OSTI ID:1387864
 [1];  [1];  [1];  [1];  [2];  [3];  [1]
  1. Univ. of California, Riverside, CA (United States). Dept. of Physics and Astronomy and Energy Frontier Research Center (EFRC)
  2. Univ. of California, Irvine, CA (United States)
  3. Univ. of California, Riverside, CA (United States)

30-80 nm thick yttrium iron garnet (YIG) films are grown by pulsed laser deposition on a 5 nm thick sputtered Pt atop gadolinium gallium garnet substrate (GGG) (110). Upon post-growth rapid thermal annealing, single crystal YIG(110) emerges as if it were epitaxially grown on GGG(110) despite the presence of the intermediate Pt film. The YIG surface shows atomic steps with the root-mean-square roughness of 0.12 nm on flat terraces. Both Pt/YIG and GGG/Pt interfaces are atomically sharp. The resulting YIG(110) films show clear in-plane uniaxial magnetic anisotropy with a well-defined easy axis along $$\langle$$001>$$\rangle$$ and a peak-to-peak ferromagnetic resonance linewidth of 7.5 Oe at 9.32 GHz, similar to YIG epitaxially grown on GGG. Both spin Hall magnetoresistance and longitudinal spin Seebeck effects in the inverted bilayers indicate excellent Pt/YIG interface quality.

Research Organization:
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:
1387864
Alternate ID(s):
OSTI ID: 1256785
Journal Information:
Applied Physics Letters, Vol. 108, Issue 24; Related Information: SHINES partners with University of California, Riverside (lead); Arizona State University; Colorado State University; Johns Hopkins University; University of California Irvine; University of California Los Angeles; University of Texas at Austin; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

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Cited By (9)

Spin Hall-induced auto-oscillations in ultrathin YIG grown on Pt journal January 2018
Fabrication of yttrium–iron–garnet/Pt multilayers for the longitudinal spin Seebeck effect journal December 2018
Perpendicular magnetic anisotropy and spin mixing conductance in polycrystalline europium iron garnet thin films journal February 2019
Systematic control of strain-induced perpendicular magnetic anisotropy in epitaxial europium and terbium iron garnet thin films journal December 2018
Magnetization reversal in YIG/GGG(111) nanoheterostructures grown by laser molecular beam epitaxy journal January 2017
FMR-driven spin pumping in Y 3 Fe 5 O 12 -based structures journal May 2018
Spin Hall magnetoresistance in antiferromagnet/heavy-metal heterostructures journal January 2018
Magnetization reversal in YIG/GGG(111) nanoheterostructures grown by laser molecular beam epitaxy text January 2017
Systematic Control of Strain-Induced Perpendicular Magnetic Anisotropy in Epitaxial Europium and Terbium Iron Garnets Thin Films text January 2018