7 papers
Direct observation and consequences of dopant segregation inside and outside dislocation cores in perovskite BaSnO3
Hwanhui Yun, Abhinav Prakash, Turan Birol +2
Distinct dopant behaviors inside and outside dislocation cores are identified by atomic-resolution electron microscopy in perovskite BaSnO3 with considerable consequences on local…
Self-Assembled Periodic Nanostructures Using Martensitic Phase Transformations
Abhinav Prakash, Tianqi Wang, Ashley Bucsek +11
We describe a novel approach for the rational design and synthesis of self-assembled periodic nanostructures using martensitic phase transformations. We demonstrate this approach i…
STEM beam channeling in BaSnO3/LaAlO3 perovskite bilayers and visualization of 2D misfit dislocation network
Hwanhui Yun, Abhinav Prakash, Bharat Jalan +2
A study of the STEM probe channeling in a heterostructures crystalline specimen is presented here with a goal to guide appropriate STEM-based characterization for complex structure…
Large-scale defects hidden inside a topological insulator grown onto a 2D substrate
Danielle Reifsnyder Hickey, Ryan J. Wu, Joon Sue Lee +7
Topological insulator (TI) materials are exciting candidates for integration into next-generation memory and logic devices because of their potential for efficient, low-energy-cons…
Sub-Atomic Channeling and Vortex Beams in SrTiO
Jong Seok Jeong, Hosup Song, Jacob T. Held +1
Inspired by recent experimental sub-atomic measurements using analytical aberration-corrected scanning transmission electron microscopes (STEMs), we studied electron probe propagat…
An Inside Look at the Ti-MoS2 Contact in Ultra-thin Field Effect Transistor with Atomic Resolution
Ryan J. Wu, Sagar Udyavara, Rui Ma +5
Two-dimensional molybdenum disulfide (MoS2) is an excellent channel material for ultra-thin field effect transistors. However, high contact resistance across the metal-MoS2 interfa…