Topics

Hybrid phonon systems

Ferromagnet & Surface acoustic wave (SAW)

• Nonreciprocal propagation of an acoustic wave  Phys. Rev. B (Rapid communication) 95, 020407 (2017).  

• Magnetization control by phonon angular momentum  Nat Commun 12, 2599 (2021).

Multiferroic materials & SAW

• Magnetically controllable SAW device with a multiferroic substrate.  Phys. Rev. Applied 9, 034034 (2018)

• Phonon - antiferromagnetic magnon coupling in a multiferroic material. Phys. Rev. B 99, 014418 (2019)

Optical imaging of  SAW

• Optical imaging of surface acoustic waves Appl. Phys. Lett. 119, 181106 (2021), Phys. Rev. B 107, 165416 (2023)

Cavity magnonics

• Small mode volume cavity magnon-polariton in high-Q dielectric resonator Journal of Applied Physics 134, 083901 (2023)

Area of Specialty

• • Phononics

  • Surface acoustic wave

  • Spintronics 

  • Multiferroic materials, Chiral magnets

  • Magnon excitation

  • Magnon-phonon coupling

  • Acousto-optic modulator

  • Quantum transducer

Skills

Sample preparation

• Device Fabrication (Photolithography, EB lithography, EB deposition, thermal deposition, Ar milling)

• Single crystal material synthesis (Flux, Floating zone)

• X-ray diffraction measurement 

Measurement

• Low temperature 

• Microwave (spectroscopy, pulse technique)

• Ultrasonic (time domain measurement by pulse technique and Fourier transformation)

• Transport (DC, lock-in technique)

• Electric and magnetic property (Polarization, Magnetization)

• Optical imaging (SAW imaging)

Analysis

• Programming, Data analysis (Python, LabVIEW, Mathematica)

• COMSOL simulation