5 papers · 1 filter
Quantifying angular momentum of coherently driven circular phonons
Roman Mankowsky, Serhane Zerdane, Shih-Wen Huang +9
The use of intense terahertz (THz) pulses to manipulate low-energy excitations offers a powerful approach for ultrafast control of electronic and magnetic properties in materials.…
Electric field switching of chiral phonons
Michael Grimes, Clifford J. Allington, Hiroki Ueda +8
Lattice vibrations carrying angular momentum, known as chiral phonons, have emerged as a promising route to control and understand complex material properties, yet their determinis…
Atomic-Scale Roughness of Freestanding Oxide Membranes Revealed by Electron Ptychography
Huaicheng Yuan, Yu-Chen Liu, Li-Shu Wang +3
Freestanding oxide films offer significant potential for integrating exotic quantum functionalities with semiconductor technologies. However, their performance is critically limite…
Imaging ferroelectric domains with soft X-ray ptychography at the oxygen K-edge
Tim A. Butcher, Nicholas W. Phillips, Chia-Chun Wei +7
The ferroelectric domain structure of a freestanding BiFeO film was visualized by ptychographic dichroic imaging with linearly polarized X-rays at the O K-edge around 530 eV. T…
Sub-nanometer depth resolution and single dopant visualization achieved by tilt-coupled multislice electron ptychography
Zehao Dong, Yang Zhang, Chun-Chien Chiu +8
Real-space imaging of three-dimensional atomic structures is a critical yet challenging task in materials science. Although scanning transmission electron microscopy has achieved s…