Field Guide to Solid State Physics

Abstract

Primitive Cell A substance is considered to be in a crystalline state (known as a crystal) if its constituent atoms are arranged in a regular and repetitive pattern. Crystals can be described by an object that, when repeated, generates the entire crystal. Such an object can be considered as a "building block" called a unit cell. The unit cell is spanned by three independent vectors a 1 , a 2 , and a 3 , which may or may not lie along the Cartesian coordinate axes. It contains only one lattice point, and its volume is

Plasmonic Photovoltaic Double-Graphene Detector Integrated Into TiN Slot Waveguides

“…2(a), it is observed that the waveguide mode is symmetric, so the absorbed power and consequently the generated carriers as a function of space are symmetric. Diffusion is a mechanism that contributes to the flow of the current when there is a gradient of carrier concentration [53]. Considering the symmetric distribution of the generated carriers and the symmetric doping profile across the photodetector cross-section (see Fig.…”