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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
Tailoring Electronic and Magnetic Properties of YcoO3 via Anharmonic Phononic Coupling and Vector Vortex Beam
Rui Tang1, Hong Zhang1, Yi-Han Cheng2,3
1College of Physics, Sichuan University, Chengdu 610065, China.
Abstract:
The ability to dynamically manipulate the optoelectronic and magnetic properties in functional materials under nonequilibrium conditions is essential for the advancement of quantum technologies and energy-related applications. Here, we demonstrate a novel method to regulate the optoelectronic and magnetic properties of YCoO3, a representative perovskite oxide, using ultrafast vortex laser pulses coupled with nonlinear phonon interactions. Vortex light, characterized by its helical phase front and topological charge, allows selective excitation of infrared phonon modes, enabling anisotropic lattice distortions and precise modulation of material properties. Based on three phonon couplings from B2u, B3u, and B1g, vortex light's angular momentum can alter spin polarization, inducing magnetic moments as high as 1.7 μB in YCoO3. Vortex light is a powerful tool for controlling nonlinear phonon dynamics and light-matter interactions, demonstrating effective manipulation of the optoelectronic and magnetic properties. It provides extraordinary means of developing advanced devices in quantum and optoelectronic applications.
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