Spin wave excitation and propagation in ultra-thin nm-thick yttrium iron garnet films

POSTER

Abstract

Magnonics has received increasing attention over the past decades, and it is widely considered to open up new opportunities to transport information by using spin waves (SWs) without charge currents. In our paper, we investigate experimentally the excitation and propagation of SW in 7-nm thick yttrium iron garnet (YIG) thin films with an ultra-low damping constant. On the top of YIG, conventional coplanar waveguides are integrated to excite a large series of short-wavelength spin waves (SWs). The scattering parameters are measured by using a vector network analyzer, which give access to observe the transmission of SW in the films. Consequently, by utilizing the experimental results, we calculate and extract the group velocity as well as the dispersion relation of SWs. Our work may be useful for providing the basis for SW logic devices at GHz rates with low power consumption.

*We wish to acknowledge the support by NSF China under grant nos. 11674020, 11444005, youth 1000 talent program, 111 talent program B16001, and Ministry of Science and Technology of China MOST no. 2016YFA0300802. The work at CSU was mainly supported by the SHINES, an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Basic Energy Sciences under award SC0012670.

Presenters

  • Hanchen Wang

    • Fert Beijing Institute, BDBC, School of Electronic and Information Engineering, Beihang University, Xueyuan Road 37, Beijing 100191, China

Authors

  • Hanchen Wang

    • Fert Beijing Institute, BDBC, School of Electronic and Information Engineering, Beihang University, Xueyuan Road 37, Beijing 100191, China

  • Tao Liu

    • Department of Physics, Colorado State University
    • Ohio State University
    • Colorado State University
    • Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA
    • Colorado State Univ

  • Chuanpu Liu

    • Fert Beijing Institute, BDBC, School of Electronic and Information Engineering, Beihang University, Xueyuan Road 37, Beijing 100191, China

  • Jilei Chen

    • Fert Beijing Institute, BDBC, School of Electronic and Information Engineering, Beihang University, Xueyuan Road 37, Beijing 100191, China

  • Youguang Zhang

    • Fert Beijing Institute, BDBC, School of Electronic and Information Engineering, Beihang University, Xueyuan Road 37, Beijing 100191, China

  • Weisheng Zhao

    • Beihang University
    • Fert Beijing Institute, BDBC, School of Electronic and Information Engineering, Beihang University, Xueyuan Road 37, Beijing 100191, China

  • Mingzhong Wu

    • Department of Physics, Colorado State University
    • Colorado State University
    • Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA
    • Colorado State Univ

  • Haiming Yu

    • Fert Beijing Institute, BDBC, School of Electronic and Information Engineering, Beihang University, Xueyuan Road 37, Beijing 100191, China