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SUMMARY:Spin wavs in magnetic textures and polarization waves in ferroelec
 tric domains - Assoc. Prof. Yuelin Zhang (Beijing Normal University)
DTSTART:20260421T130000Z
DTEND:20260421T143000Z
UID:TALK246655@talks.cam.ac.uk
CONTACT:Bo Peng
DESCRIPTION:Elementary excitations of order parameters and their propagati
 ng waves in the solid state have been intensively studied and widely appli
 ed. In ferromagnets\, investigating spin excitations (e.g.\, magnons) in t
 opological spin textures is highly valuable for both physics research and 
 future device design for spintronics and magnonics. Firstly\, I will begin
  by briefly reviewing our previous progress in manganite thin films\, incl
 uding a strain-gradient-driven symmetry broken for 3D anisotropic Dzyalosh
 inskii-Moriya interaction\, and the stabilization of topological spin text
 ures including magnetic skyrmions lattice and bimerons lattice [1-2]. Then
 \, I will mainly present the exploration of switchable propagation of chir
 al magnonic edge state in quasi-antiferromagnetic spin textures [3]. Secon
 d part\, I will introduce our experimental exploration of microwave excita
 tion in ferroelectric orders. We report the all-electric excitation\, dete
 ction and manipulation of coherent polarization waves in self-organized an
 tiparallel-coupled ferroelectric domains [4].\n\n1. Y. Zhang et al.\, Stra
 in-Driven Dzyaloshinskii-Moriya Interaction for Room-Temperature. Phys. Re
 v. Lett. 127\, 117204 (2021)\n\n2. M. Cai\, Y. Zhang et al.\, Stabilizatio
 n and Observation of Large-Area Ferromagnetic Bimeron Lattice. Phys. Rev. 
 Lett. 135\, 116703 (2025)\n\n3. Y. Zhang et al.\, Switchable long-distance
  propagation of chiral magnonic edge states. Nat. Mater. 24\, 69–75 (202
 5)\n\n4. Y. Zhang et al.\, observation and control of ferroelectric polari
 zation waves\, unpublished.\n\n\n
LOCATION:Seminar Room 3\, RDC
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