498 citations · 847 across the 11 of their papers we have counts for
11 papers
Angstrom-Scale Imaging of Magnetization in Antiferromagnetic FeAs via 4D-STEM
Kayla X. Nguyen, Jeffrey Huang, Manohar H. Karigerasi +6
We demonstrate a combination of computational tools and experimental 4D-STEM methods to image the local magnetic moment in antiferromagnetic FeAs with 6 angstrom spatial resolu…
Transferring Orbital Angular Momentum to an Electron Beam Reveals Toroidal and Chiral Order
Kayla X. Nguyen, Yi Jiang, Michael C. Cao +13
Orbital angular momentum and torque transfer play central roles in a wide range of magnetic textures and devices including skyrmions and spin-torque electronics(1-4). Analogous top…
Disentangling magnetic and grain contrast in polycrystalline FeGe thin films using four-dimensional Lorentz scanning transmission electron microscopy
Kayla X. Nguyen, Xiyue S. Zhang, Emrah Turgut +9
The study of nanoscale chiral magnetic order in polycrystalline materials with a strong Dzyaloshinkii-Moriya interaction (DMI) is interesting for the observation of magnetic phenom…
Revealing the nanoparticle composition of Edvard Munch's The Scream, and implications for paint alteration in iconic early 20th century artworks
Barnaby D. A. Levin, Adam C. Finnefrock, Alyssa M. Hull +7
A major motivation for the scientific study of artworks is to understand their states of preservation and ongoing degradation mechanisms. This enables preservation strategies to be…
Engineering Dzyaloshinskii-Moriya interaction in B20 thin film chiral magnets
Emrah Turgut, Hanjong Paik, Kayla Nguyen +3
Chiral magnetic MnFeGe compounds have an antisymmetric exchange interaction that is tunable with the manganese stoichiometric fraction, . Although millimeter-scale,…
Strain Mapping of Two-Dimensional Heterostructures with Sub-Picometer Precision
Yimo Han, Kayla Nguyen, Michael Cao +7
Next-generation, atomically thin devices require in-plane, one-dimensional heterojunctions to electrically connect different two-dimensional (2D) materials. However, the lattice mi…
Theory and Practice of Electron Diffraction from Single Atoms and Extended Objects using an Electron Microscope Pixel Array Detector
Michael C. Cao, Yimo Han, Zhen Chen +5
What does the diffraction pattern from a single atom look like? How does it differ from the scattering from long range potential? With the development of new high-dynamic range pix…
Chiral magnetic excitations in FeGe films
Emrah Turgut, Albert Park, Kayla Nguyen +3
Although chiral magnetic materials have emerged as a potential ingredient in future spintronic memory devices, there are few comprehensive studies of magnetic properties in scalabl…
High Dynamic Range Pixel Array Detector for Scanning Transmission Electron Microscopy
Mark W. Tate, Prafull Purohit, Darol Chamberlain +13
We describe a hybrid pixel array detector (EMPAD - electron microscope pixel array detector) adapted for use in electron microscope applications, especially as a universal detector…
Enhancement of the Anti-Damping Spin Torque Efficacy of Platinum by Interface Modification
Minh-Hai Nguyen, Chi-Feng Pai, Kayla X. Nguyen +3
We report a strong enhancement of the efficacy of the spin Hall effect (SHE) of Pt for exerting anti-damping spin torque on an adjacent ferromagnetic layer by the insertion of $\ap…
A single-molecule approach to ZnO defect studies: single photons and single defects
N. R. Jungwirth, Y. Y. Pai, H. S. Chang +2
Investigations that probe defects one at a time offer a unique opportunity to observe properties and dynamics that are washed out of ensemble measurements. Here we present confocal…