176 citations · 638 across the 8 of their papers we have counts for
8 papers
Laser-Induced Skyrmion Writing and Erasing in an Ultrafast Cryo-Lorentz Transmission Electron Microscopy
G. Berruto, I. Madan, Y. Murooka +11
We demonstrate that light-induced heat pulses of different duration and energy can write skyrmions in a broad range of temperatures and magnetic field in FeGe. Using a combination…
Magnetic skyrmions and skyrmion clusters in the helical phase of CuOSeO
Jan Müller, Jayaraman Rajeswari, Ping Huang +4
Skyrmions are nanometric spin whirls that can be stabilized in magnets lacking inversion symmetry. The properties of isolated skyrmions embedded in a ferromagnetic background have…
Filming the formation and fluctuation of Skyrmion domains by cryo-Lorentz Transmission Electron Microscopy
J. Rajeswari, H. Ping, G. F. Mancini +10
Magnetic skyrmions are promising candidates as information carriers in logic or storage devices thanks to their robustness, guaranteed by the topological protection, and their nano…
Electronically Driven Fragmentation of Silver Nanocrystals Revealed by Ultrafast Electron Crystallography
Ramani K. Raman, Ryan A. Murdick, Richard J. Worhatch +4
We report an ultrafast electron diffraction study of silver nanocrystals under surface plasmon resonance excitation, leading to a concerted fragmentation. By examining simultaneous…
The development and applications of ultrafast electron nanocrystallography
Chong-Yu Ruan, Yoshie Murooka, Ramani K. Raman +3
We review the development of ultrafast electron nanocrystallography as a method for investigating structural dynamics for nanoscale materials and interfaces. Its sensitivity and re…
Direct observation of optically induced transient structures in graphite using ultrafast electron crystallography
Ramani K. Raman, Yoshie Murooka, Chong-Yu Ruan +3
We use ultrafast electron crystallography to study structural changes induced in graphite by a femtosecond laser pulse. At moderate fluences of ~< 21mJ/cm^2, lattice vibrations are…
Photovoltage Dynamics of the Hydroxylated Si(111) Surface Investigated by Ultrafast Electron Diffraction
Ryan A. Murdick, Ramani K. Raman, Yoshie Murooka +1
We present a novel method to measure transient photovoltage at nanointerfaces using ultrafast electron diffraction. In particular, we report our results on the photoinduced electro…
Dynamics of Size-Selected Gold Nanoparticles Studied by Ultrafast Electron Nanocrystallography
Chong-Yu Ruan, Yoshie Murooka, Ramani K. Raman +1
We report the studies of ultrafast electron nanocrystallography on size-selected Au nanoparticles (2-20 nm) supported on a molecular interface. Reversible surface melting, melting,…