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Title: Interfacial control of Dzyaloshinskii-Moriya interaction in heavy metal/ferromagnetic metal thin film heterostructures

Journal Article · · Physical Review B
 [1];  [2];  [2];  [3];  [2];  [1];  [1];  [1];  [3];  [2];  [1]
  1. Univ. of Texas, Austin, TX (United States)
  2. Univ. of California, Los Angeles, CA (United States)
  3. Univ. of Delaware, Newark, DE (United States)

The interfacial Dzyaloshinskii-Moriya interaction (DMI) in ultrathin magnetic thin film heterostructures provides a new approach for controlling spin textures on mesoscopic length scales. Here we investigate the dependence of the interfacial DMI constant D on a Pt wedge insertion layer in Ta/CoFeB/Pt(wedge)/MgO thin films by observing the asymmetric spin-wave dispersion using Brillouin light scattering. Continuous tuning of D by more than a factor of 3 is realized by inserting less than one monolayer of Pt. The observations in this work provide new insights for designing magnetic thin film heterostructures with tailored D for controlling skyrmions and magnetic domain-wall chirality and dynamics.

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); National Science Foundation (NSF)
Grant/Contract Number:
SC0012670; 1505192
OSTI ID:
1388922
Alternate ID(s):
OSTI ID: 1333590
Journal Information:
Physical Review B, Vol. 94, Issue 18; 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 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

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Cited By (11)

Antiferromagnetic domain wall as spin wave polarizer and retarder journal August 2017
Robust Formation of Ultrasmall Room-Temperature Neél Skyrmions in Amorphous Ferrimagnets from Atomistic Simulations journal July 2019
Field-free spin-orbit torque switching of a perpendicular ferromagnet with Dzyaloshinskii-Moriya interaction journal January 2019
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
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
Spin–Orbit Torques in Metallic Magnetic Multilayers: Challenges and New Opportunities journal September 2017
Current-Induced Domain Wall Motion and Tilting in Perpendicularly Magnetized Racetracks journal August 2018
Effects of spatially engineered Dzyaloshinskii-Moriya interaction in ferromagnetic films text January 2017
Asymmetric and symmetric exchange in a generalized 2D Rashba ferromagnet text January 2018
Accelerating, guiding, and compressing skyrmions by defect rails text January 2018