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Title: Modulation of spin dynamics via voltage control of spin-lattice coupling in multiferroics

Journal Article · · Advanced Functional Materials
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  1. Xi'an Jiaotong Univ., Shaanxi (China). Electronic Materials Lab., Key Lab. of the Ministry of Education and International Center for Dielectric Research
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division

Our work aims at magnonics manipulation by the magnetoelectric coupling effect and is motivated by the most recent progresses in both magnonics (spin dynamics) and multiferroics fields. Here, voltage control of magnonics, particularly the surface spin waves, is achieved in La0.7Sr0.3MnO3/0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 multiferroic heterostructures. With the electron spin resonance method, a large 135 Oe shift of surface spin wave resonance (≈7 times greater than conventional voltage-induced ferromagnetic resonance shift of 20 Oe) is determined. A model of the spin-lattice coupling effect, i.e., varying exchange stiffness due to voltage-induced anisotropic lattice changes, has been established to explain experiment results with good agreement. In addition, an “on” and “off” spin wave state switch near the critical angle upon applying a voltage is created. The modulation of spin dynamics by spin-lattice coupling effect provides a platform for realizing energy-efficient, tunable magnonics devices.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1347324
Journal Information:
Advanced Functional Materials, Journal Name: Advanced Functional Materials Journal Issue: 10 Vol. 27; ISSN 1616-301X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Ionic Liquid Gating Control of Spin Wave Resonance in La 0.7 Sr 0.3 MnO 3 Thin Film journal November 2019
Towards magnonic devices based on voltage-controlled magnetic anisotropy journal August 2019
Electric-field control of magnetic anisotropy rotation in multiferroic Ni/(011)-Pb(Mg 2/3 Nb 1/3 ) 0.7 Ti 0.3 O 3 heterostructures journal October 2017
The tunable optical magneto-electric effect in patterned manganese oxide superlattices journal May 2018
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