11 papers
Advances in electrical contacts to single crystals of emerging materials for transport measurements
Huandong Chen, Abhay N. Pasupathy, Jayakanth Ravichandran
Transport measurements that probe electrical resistivity of a material under varying external stimuli, such as temperature, magnetic field, optical illumination, and gate voltage,…
Revealing buried ferroelectric topologies by depth-resolved electron diffraction imaging
Ting-Ran Liu, Koushik Jagadish, Xiangwei Guo +10
Nanoscale topological polar textures promise new functionalities for ferroelectric memories and logic, yet their three-dimensional structure and mesoscale organization remain exper…
Sub-nm2 ferroelectric domains via charged 180 degree walls in ZrO2
Nashrah Afroze, Hamoon Fahrvandi, Guodong Ren +31
Flat phonon bands in fluorite ferroelectrics (HfO2 or ZrO2) shrink polar domains laterally to an irreducible half-unit-cell width (0.27 nm) within which the vertical arrangement of…
Anti-reflection coatings for highly anisotropic materials in the mid infrared
Hongyan Mei, Jin-Woo Cho, Jae-Seon Yu +6
We develop and optimize thin anti-reflection coatings (ARCs) for highly anisotropic materials in the mid infrared. Unlike conventional ARCs that assume nearly isotropic refractive…
Chemical state detection and charge transfer in complex oxide heterostructures via in situ Auger Electron Spectroscopy
Harish Kumarasubramanian, Jayakanth Ravichandran
Understanding and controlling the chemical states both in the bulk and at the interfaces of complex oxide thin films is essential for engineering a wide range of electronic, optica…
Evaluation of carbon incorporation in sulfide thin films grown by hybrid pulsed laser deposition
Claire Wu, Mythili Surendran, Shin Muramoto +2
Vapor-pressure-mismatched materials, such as transition metal chalcogenides, have emerged as key electronic, photonic, and quantum materials. Hybrid pulsed laser deposition (hPLD)…