-
Periodic Potentials and the Kronig-Penney Model
Teaching Materials | 01 Jul 2008 | Contributor(s):: Dragica Vasileska
This material describes the derivation of the Kronig-Penney model for delta-function periodic potentials.
-
Quantum-Mechanical Reflections in Nanodevices: an Exercise
Teaching Materials | 02 Jul 2008 | Contributor(s):: Dragica Vasileska, Gerhard Klimeck
This exercise points out to the fact that quantum-mechanical reflections are going to be significant in nanoscale devices and proper modeling of these device structures must take into consideration the quantum-mechanical reflections. NSF, ONR Dragica Vasileska personal web-site...
-
Periodic Potentials and Bandstructure: an Exercise
Teaching Materials | 02 Jul 2008 | Contributor(s):: Dragica Vasileska, Gerhard Klimeck
This exercise teaches the students that in the case of strong coupling between the neighboring wells in square and Coulomb periodic potential wells electrons start to behave as free electrons and the gaps that open at the Brillouin zone boundaries become smaller and smaller (thus recovering the...
-
From 1 well to 2 wells to 5 wells to periodic potentials: an Exercise
Teaching Materials | 02 Jul 2008 | Contributor(s):: Dragica Vasileska, Gerhard Klimeck
This exercise demonstrates that the interaction between the wells lifts the degeneracy of the quasi-bound states and if in the limit we have infinite periodic potential it leads to formation of energy bands. Notice that when the interaction is less strong the energy levels are more sharp and...
-
Open Systems
Teaching Materials | 30 Jun 2008 | Contributor(s):: Dragica Vasileska
This tutorial contains introductory material for Quantum Mechanics for Engineers with emphasis on tunneling, open systems and the definitions of transmission and reflection coefficients and their calculation in the case of piece-wise constant potential energy profiles.NSF
-
Double Barrier Case
Teaching Materials | 30 Jun 2008 | Contributor(s):: Dragica Vasileska
This material contains derivation for the transmission coefficient and current calculation in double-barrier structures that are also known as resonant tunneling diodes.
-
Quantum-Mechanical Reflections: an Exercise
Teaching Materials | 30 Jun 2008 | Contributor(s):: Dragica Vasileska, Gerhard Klimeck
-
Double-Barrier Case: An Exercise
Teaching Materials | 30 Jun 2008 | Contributor(s):: Dragica Vasileska, Gerhard Klimeck
-
Quantum Dot Spectra, Absorption, and State Symmetry: an Exercise
Teaching Materials | 30 Mar 2008 | Contributor(s):: Gerhard Klimeck
The tutorial questions based on the Quantum Dot Lab v1.0 available online at Quantum Dot Lab. Students are asked to explore the various different quantum dot shapes, optimize the intra-band absorption through geometry variations, and consider the concepts of state symmetry and eigenstates.
-
Finite Height Quantum Well: an Exercise for Band Structure
Teaching Materials | 31 Jan 2008 | Contributor(s):: David K. Ferry
Use the Resonant Tunneling Diodes simulation tool on nanoHUB to explore the effects of finite height quantum wells. Looking at a 2 barrier device, 300 K, no bias, other standard variables, and 3 nm thick barriers and a 7 nm quantum well, determine the energies of the two lowest quasi-bound states.
-
Resonant Tunneling Diodes: an Exercise
Teaching Materials | 06 Jan 2006 | Contributor(s):: H.-S. Philip Wong
This homework assignment was created by H.-S. Philip Wong for EE 218 "Introduction to Nanoelectronics and Nanotechnology" (Stanford University). It includes a couple of simple "warm up" exercises and two design problems, intended to teach students the electronic properties...