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8 papers · 2 filters
Fermi Level Tuning of Epitaxial Sb2Te3 Thin Films on Graphene by Regulating Intrinsic Defects and Substrate Transfer Doping
Yeping Jiang, Y. Y. Sun, Mu Chen +9
High-quality Sb2Te3 films are obtained by molecular beam epitaxy on graphene substrate and investigated by in situ scanning tunneling microscopy/spectroscopy. Intrinsic defects res…
Effects of Interface Disorder on Valley Splitting in SiGe/Si/SiGe Quantum Wells
Zhengping Jiang, Neerav Kharche, Timothy Boykin +1
A sharp potential barrier at the Si/SiGe interface introduces valley splitting (VS), which lifts the 2-fold valley degeneracy in strained SiGe/Si/SiGe quantum wells (QWs). This wor…
Effect of Layer-Stacking on the Electronic Structure of Graphene Nanoribbons
Neerav Kharche, Yu Zhou, Kevin P. O'Brien +2
The evolution of electronic structure of graphene nanoribbons (GNRs) as a function of the number of layers stacked together is investigated using \textit{ab initio} density functio…
Mechanics properties of Mono-layer Hexagonal Boron Nitride: Ab initio study
Qing Peng, Amir R. Zamiri, Suvranu De
We introduced a method to obtain the continuum description of the elastic properties of mono- layer h-BN through ab initio density functional theory. This thermodynamically rigorou…
Elastic Properties of Hybrid Graphene/Boron Nitride Monolayer
Qing Peng, Amir R. Zamiri, Wei Ji +1
Recently hybridized monolayers consisting of hexagonal boron nitride (h-BN) phases inside graphene layer have been synthesized and shown to be an effective way of opening band gap…
Tunable Band Gaps of Mono-layer Hexagonal BNC Heterostructures
Qing Peng, Amir Zamiri, Suvranu De
Bandgap engineering by substituting C with B and N atoms in graphene has been shown to be a promising way to improve semiconducting properties of graphene. Such hybridized monolaye…