nanoHUB.org - Tags: transport/quantum: resources
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Fri, 25 Jul 2014 05:35:25 -0400HUBzero - The open source platform for scientific and educational collaborationen-gbCopyright 2014 nanoHUB.orgTagsIntroduction: Nanoelectronics and the meaning of resistance
http://nanohub.org/resources/5210
http://nanohub.org/resources/52101Wed, 20 Aug 2008 20:06:29 -0400Lecture 1A: What and where is the resistance?
http://nanohub.org/resources/5211
http://nanohub.org/resources/5211Objective: To introduce a simple quantitative model that highlights the essential parameters that determine electrical conduction: the density of states in the channel, D and the rates at which electrons hop in and out of the two contacts, labeled source and drain. This...]]>1Wed, 20 Aug 2008 20:06:29 -0400Lecture 1B: What and where is the resistance?
http://nanohub.org/resources/5248
http://nanohub.org/resources/5248Objective: To introduce a simple quantitative model that highlights the essential parameters that determine electrical conduction: the density of states in the channel, D and the rates at which electrons hop in and out of the two contacts, labeled source and drain. This...]]>1Wed, 20 Aug 2008 20:06:04 -0400Lecture 2A: Quantum Transport
http://nanohub.org/resources/5263
http://nanohub.org/resources/5263Objective: To extend the simple model from Lectures 1 into the full-fledged Non-equilibrium Green’s Function (NEGF) – Landauer model by introducing a spatial grid of N points and turning numbers like into (NxN) matrices like , with incoherent scattering introduced through ....]]>1Wed, 20 Aug 2008 20:06:04 -0400Lecture 2B: Quantum Transport
http://nanohub.org/resources/5268
http://nanohub.org/resources/5268Objective: To extend the simple model from Lectures 1 into the full-fledged Non-equilibrium Green’s Function (NEGF) – Landauer model by introducing a spatial grid of N points and turning numbers like into (NxN) matrices like , with incoherent scattering introduced through ....]]>1Wed, 20 Aug 2008 20:06:04 -0400Lecture 3A: Spin Transport
http://nanohub.org/resources/5269
http://nanohub.org/resources/5269Objective: To extend the model from Lectures 1 and 2 to include electron spin. Every electron is an elementary “magnet” with two states having opposite magnetic moments. Usually this has no major effect on device operation except to increase the conductance by a factor of...]]>1Wed, 20 Aug 2008 20:06:04 -0400Lecture 3B: Spin Transport
http://nanohub.org/resources/5270
http://nanohub.org/resources/5270Objective: To extend the model from Lectures 1 and 2 to include electron spin. Every electron is an elementary “magnet” with two states having opposite magnetic moments. Usually this has no major effect on device operation except to increase the conductance by a factor of...]]>1Wed, 20 Aug 2008 20:06:04 -0400Lecture 4B: Energy Exchange and Maxwell’s Demon
http://nanohub.org/resources/5272
http://nanohub.org/resources/5272Objective: To incorporate distributed energy exchange processes into the previous models from lectures 1 through 3 which are based on a “Landauer-like picture” where the Joule heating associated with current flow occurs entirely in the two contacts.Although there is...]]>1Wed, 20 Aug 2008 20:06:04 -0400Lecture 5A: Correlations and Entanglement
http://nanohub.org/resources/5273
http://nanohub.org/resources/5273Objective: To relate the one-electron picture used throughout these lectures to the more general but less tractable many-particle picture that underlies it. We introduce this new viewpoint using the example of Coulomb blockaded electronic devices that are difficult to model within the...]]>1Wed, 20 Aug 2008 20:06:04 -0400Lecture 5B: Correlations and Entanglement
http://nanohub.org/resources/5274
http://nanohub.org/resources/5274Objective: To relate the one-electron picture used throughout these lectures to the more general but less tractable many-particle picture that underlies it. We introduce this new viewpoint using the example of Coulomb blockaded electronic devices that are difficult to model within the...]]>1Wed, 20 Aug 2008 20:06:04 -0400Nanoelectronics and the Meaning of Resistance
http://nanohub.org/resources/5279
http://nanohub.org/resources/5279

The purpose of this series of lectures is to introduce the "bottom-up" approach to nanoelectronics using concrete examples. No prior...]]>
6Wed, 20 Aug 2008 20:06:04 -0400ABACUS - Assembly of Basic Applications for Coordinated Understanding of Semiconductors
http://nanohub.org/resources/abacus
http://nanohub.org/resources/abacusTool-Powered curriculum on Semiconductor Device Education .The latest tool update has now additional tabs for each tool that allows looking at posted homework assignments, link back to the originally embedded tool, and...]]>7Fri, 08 Aug 2008 15:01:48 -0400Finite Height Quantum Well: an Exercise for Band Structure
http://nanohub.org/resources/3949
http://nanohub.org/resources/3949Use 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...]]>
39Thu, 31 Jan 2008 22:18:46 -0500Electron-Phonon and Electron-Electron Interactions in Quantum Transport
http://nanohub.org/resources/3831
http://nanohub.org/resources/3831The objective of this work is to shed light on electron transport through sub-micron semi-conductor structures, where electronic state quantization, electron-electron interactions and electron-phonon interactions are important. We concentrate here on the most developed vertical quantum...]]>3Mon, 14 Jan 2008 17:32:11 -0500Engineering at the nanometer scale: Is it a new material or a new device?
http://nanohub.org/resources/3504
http://nanohub.org/resources/3504School of Materials Engineering Seminar

At the nanometer scale the concepts of device and material meet and a new device is really a new material and vice versa. While atomistic device representation is novel to device physicists who typically deal in effective mass models, the...]]>1Tue, 06 Nov 2007 21:53:50 -0500Quantum Ballistic Transport in Semiconductor Heterostructures
http://nanohub.org/resources/3086
http://nanohub.org/resources/3086The development of epitaxial growth techniques has sparked a growing interest in an entirely quantum mechanical description of carrier transport. Fabrication methods, such as molecular beam epitaxy (MBE), allow for growth of ultra-thin layers of differing material compositions. Structures can...]]>3Mon, 27 Aug 2007 15:05:58 -0400Orbital Mediated Tunneling in a New Unimolecular Rectifier
http://nanohub.org/resources/2748
http://nanohub.org/resources/2748In 1997 we showed that hexadecylquinolinium tricyanoquinodimethanide is a unimolecular rectifier, by scanning tunneling microscopy and also as a Langmuir-Blodgett (LB) monolayer, sandwiched between Al electrodes. We have now seen rectification in a new molecule: this rectification can be...]]>1Fri, 22 Jun 2007 20:04:09 -0400Pan American Advanced Study Institute Lectures: Nanodevices and Maxwell’s Demon
http://nanohub.org/resources/2758
http://nanohub.org/resources/2758Pan AmericanAdvanced Study Institute (PASI) Lectures: Nanodevices and Maxwell's DemonThis is a video taped set of two one-hour live lectures covering roughly the same material as Lectures 1-3 of Concepts of Quantum Transport.

An electronic...]]>
1Thu, 14 Jun 2007 20:57:36 -0400PASI Lecture: Nanodevices and Maxwell's Demon, Part 2
http://nanohub.org/resources/2784
http://nanohub.org/resources/2784PASI2007 - Pan American Advanced Study Institute 2007 National Science Foundation with a Pan American School Institute Award]]>1Thu, 14 Jun 2007 20:57:33 -0400PASI Lecture: Nanodevices and Maxwell's Demon, Part 1
http://nanohub.org/resources/2783
http://nanohub.org/resources/2783PASI2007 - Pan American Advanced Study Institute 2007 National Science Foundation with a Pan American School Institute Award]]>1Wed, 13 Jun 2007 17:45:36 -0400