Published February 2, 2015 | Version v1
Journal article Metadata-only

Asymmetric spin-wave dispersion due to Dzyaloshinskii-Moriya interaction in an ultrathin Pt/CoFeB film

Creators

  • 1. Department of Physics, National University of Singapore, Singapore 117551 (Singapore)
  • 2. Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576 (Singapore)

Description

Employing Brillouin spectroscopy, strong interfacial Dzyaloshinskii-Moriya interactions have been observed in an ultrathin Pt/CoFeB film. Our micromagnetic simulations show that spin-wave nonreciprocity due to asymmetric surface pinning is insignificant for the 0.8 nm-thick CoFeB film studied. The observed high asymmetry of the monotonic spin wave dispersion relation is thus ascribed to strong Dzyaloshinskii-Moriya interactions present at the Pt/CoFeB interface. Our findings should further enhance the significance of CoFeB as an important material for magnonic and spintronic applications

Additional details

Identifiers

DOI
10.1063/1.4907173;
arXiv
arXiv:1412.3907v2;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
106
Journal Issue
5
Journal Page Range
p. 052403-052403.4
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
46126151
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ASYMMETRY; COBALT COMPOUNDS; DISPERSION RELATIONS; IRON BORIDES; PLATINUM; SIMULATION; SPECTROSCOPY; SPIN WAVES; THIN FILMS
Descriptors DEC
BORIDES; BORON COMPOUNDS; ELEMENTS; FILMS; IRON COMPOUNDS; METALS; PLATINUM METALS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS

Optional Information

Notes
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