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Title: Interfacial Dzyaloshinskii-Moriya Interaction: Effect of $5d$ Band Filling and Correlation with Spin Mixing Conductance

Journal Article · · Physical Review Letters
 [1];  [2];  [3];  [4];  [4];  [3];  [4];  [5]
  1. Univ. of Texas, Austin, TX (United States); Univ. of California, Santa Barbara, CA (United States)
  2. Univ. of California, Los Angeles, CA (United States); Chinese Academy of Sciences (CAS), Beijing (China)
  3. Univ. of California, Riverside, CA (United States)
  4. Univ. of California, Los Angeles, CA (United States)
  5. Univ. of Texas, Austin, TX (United States)

The Dzyaloshinskii-Moriya interaction (DMI) at the heavy metal (HM) and ferromagnetic metal (FM) interface has been recognized as a key ingredient in spintronic applications. Here we investigate the chemical trend of DMI on the $5d$ band filling ($$5d^3-5d^{10}$$) of the HM element in HM/FM ($$\mathrm{FM = CoFeB, Co)/MgO}$$ multilayer thin films. DMI is quantitatively evaluated by measuring asymmetric spin wave dispersion using Brillouin light scattering. Sign reversal and 20 times modification of the DMI coefficient $$D$$ have been measured as the $5d$ HM element is varied. The chemical trend can be qualitatively understood by considering the $5d$ and $3d$ bands alignment at the HM/FM interface and the subsequent orbital hybridization around the Fermi level. Furthermore, a correlation is observed between DMI and effective spin mixing conductance at the HM/FM interfaces. Finally, our results provide new insights into the interfacial DMI for designing future spintronic devices.

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:
1470356
Alternate ID(s):
OSTI ID: 1433025
Journal Information:
Physical Review Letters, Vol. 120, Issue 15; 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 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 100 works
Citation information provided by
Web of Science

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Strong Damping‐Like Spin‐Orbit Torque and Tunable Dzyaloshinskii–Moriya Interaction Generated by Low‐Resistivity Pd 1− x Pt x Alloys journal February 2019
Anatomy of Skyrmionic Textures in Magnetic Multilayers journal February 2019
Energy‐Efficient Ultrafast SOT‐MRAMs Based on Low‐Resistivity Spin Hall Metal Au 0.25 Pt 0.75 journal January 2020
Skyrmionium – high velocity without the skyrmion Hall effect journal November 2018
Individual skyrmion manipulation by local magnetic field gradients journal November 2019
Dzyaloshinskii-Moriya interaction at disordered interfaces from ab initio theory: Robustness against intermixing and tunability through dusting journal December 2018
Field-free spin-orbit torque switching of a perpendicular ferromagnet with Dzyaloshinskii-Moriya interaction journal January 2019
Reversal of domain wall chirality with ferromagnet thickness in W/(Co)FeB/MgO systems journal January 2019
Interfacial Dzyaloshinskii-Moriya interaction, interface-induced damping and perpendicular magnetic anisotropy in Pt/Co/W based multilayers journal October 2019
Interfacial Dzyaloshinskii-Moriya interaction between ferromagnetic insulator and heavy metal journal February 2020
Pt concentration dependence of the interfacial Dzyaloshinskii–Moriya interaction, the Gilbert damping parameter and the magnetic anisotropy in Py/Cu 1−x Pt x systems journal November 2018
Influence of the capping layer material on the interfacial Dzyaloshinskii–Moriya interaction in Pt/Co/capping layer structures probed by Brillouin light scattering journal January 2019
Direct observation of unusual interfacial Dzyaloshinskii-Moriya interaction in graphene/NiFe/Ta heterostructures journal January 2019
Domain-wall motion and interfacial Dzyaloshinskii-Moriya interactions in Pt / Co / Ir ( t Ir ) / Ta multilayers journal March 2019
Individual skyrmion manipulation by local magnetic field gradients text January 2019
Dzyaloshinskii-Moriya interaction at disordered interfaces from ab initio theory: robustness against intermixing and tunability through dusting text January 2018
Strong damping-like spin-orbit torque and tunable Dzyaloshinskii-Moriya interaction generated by low-resistivity Pd$_{1-x}$Pt$_x$ alloys text January 2019
Individual skyrmion manipulation by local magnetic field gradients text January 2019
Correlation between the Dzyaloshinskii-Moriya interaction and the orbital angular momentum at an oxide / ferromagnet interface text January 2019
Indications for Dzyaloshinskii-Moriya Interaction at the Pd/Fe Interface Studied by \textit{In Situ} Polarized Neutron Reflectometry text January 2019
Chiral spin-wave velocities induced by all-garnet interfacial Dzyaloshinskii-Moriya interaction in ultrathin yttrium iron garnet films text January 2019
Energy-efficient ultrafast SOT-MRAMs based on low-resistivity spin Hall metal Au0.25Pt0.75 text January 2019