Modulation of Spin Dynamics via Voltage Control of Spin-Lattice Coupling in Multiferroics

Mingmin Zhu, Ziyao Zhou, Bin Peng, Shishun Zhao, Yijun Zhang, Gang Niu, Wei Ren, Zuo Guang Ye, Yaohua Liu, Ming Liu

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48 Scopus citations

Abstract

Motivated by the most recent progresses in both magnonics (spin dynamics) and multiferroics fields, this work aims at magnonics manipulation by the magnetoelectric coupling effect. 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. Additionally, 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.

Original languageEnglish
Article number1605598
JournalAdvanced Functional Materials
Volume27
Issue number10
DOIs
StatePublished - Mar 10 2017

Funding

The work was supported by the Natural Science Foundation of China (Grant Nos. 51472199, 11534015, 51602244, and 90923001), the Natural Science Foundation of Shaanxi Province (Grant No. 2015JM5196), the National 111 Project of China (B14040), the 973 Program (Grant No. 2015CB057402), and the Fundamental Research Funds for the Central Universities. The authors appreciate the support from the International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technologies. Ziyao Zhou and Ming Liu were supported by the China Recruitment Program of Global Youth Experts. Dr. Yaohua Liu was supported by the Division of Scientific User Facilities of the Office of Basic Energy Sciences, US Department of Energy.

Keywords

  • LSMO
  • magnonics
  • multiferroics
  • spin waves
  • spin-lattice coupling effect

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