Tags: tunneling

Resources (21-40 of 52)

  1. Simulation of the Spin Field Effect Transistors: Effects of Tunneling and Spin Relaxation on its Performance

    05 Apr 2010 | Online Presentations | Contributor(s): Yunfei Gao

    A numerical simulation of spin-dependent quantum transport for a spin field effect transistor (spinFET) is implemented in a widely used simulator nanoMOS. This method includes the effect of...

    http://nanohub.org/resources/8540

  2. Nanoelectronic Modeling nanoHUB Demo 2: RTD simulation with NEGF

    09 Mar 2010 | Online Presentations | Contributor(s): Gerhard Klimeck

    Demonstration of resonant tunneling diode (RTD) simulation using the RTD Simulation with NEGF Tool with a Hartree potential model showing potential profile, charge densities, current-voltage...

    http://nanohub.org/resources/8317

  3. Nanoelectronic Modeling nanoHUB Demo 1: nanoHUB Tool Usage with RTD Simulation with NEGF

    09 Mar 2010 | Online Presentations | Contributor(s): Gerhard Klimeck

    Demonstration of running tools on the nanoHUB. Demonstrated is the RTD Simulation with NEGF Tool using a simple level-drop potential model and a more realistic device using a Thomas-Fermi...

    http://nanohub.org/resources/8318

  4. Nanoelectronic Modeling Lecture 26: NEMO1D -

    09 Mar 2010 | Online Presentations | Contributor(s): Gerhard Klimeck

    NEMO1D demonstrated the first industrial strength implementation of NEGF into a simulator that quantitatively simulated resonant tunneling diodes. The development of efficient algorithms that...

    http://nanohub.org/resources/8596

  5. Nanoelectronic Modeling Lecture 12: Open 1D Systems - Transmission through Double Barrier Structures - Resonant Tunneling

    27 Jan 2010 | Online Presentations | Contributor(s): Gerhard Klimeck, Dragica Vasileska

    This presentation shows that double barrier structures can show unity transmission for energies BELOW the barrier height, resulting in resonant tunneling. The resonance can be associated with a...

    http://nanohub.org/resources/8195

  6. ME 597 Lecture 3: Quantum Tunneling/The STM

    08 Oct 2009 | Online Presentations | Contributor(s): Ron Reifenberger

    Topics: Quantum Tunneling The STM – basic idea Recommended Reading: See References below. G. Binnig, H. Rohrer, Ch. Gerber, E. Weibel, “Tunneling through a controllable vacuum gap”,...

    http://nanohub.org/resources/7563

  7. Lecture 6: Graphene PN Junctions

    22 Sep 2009 | Online Presentations | Contributor(s): Mark Lundstrom

    Outline: Introduction Electron optics in graphene Transmission across NP junctions Conductance of PN and NN junctions Discussion Summary Network for Computational Nanotechnology, Intel...

    http://nanohub.org/resources/7423

  8. Illinois ECE 598EP Lecture 12 - Hot Chips: Boundary Resistance and Thermometry

    17 Jul 2009 | Online Presentations | Contributor(s): Eric Pop, Omar N Sobh

    Boundary Resistance and Thermometry Topics: Summary of Boundary Resistance Acoustic vs. Diffuse Mismatch Model Band to Band Tunneling Conduction Thermionic and Field Emission(3D) ...

    http://nanohub.org/resources/7115

  9. Piece-Wise Constant Potential Barriers Tool Demonstration: Bandstructure Formation with Finite Superlattices

    11 Jun 2009 | Animations | Contributor(s): Gerhard Klimeck, Benjamin P Haley

    This video shows the simulation and analysis of a systems with a series of potential barriers. Several powerful analytic features of Piece-wise Constant Potential Barrier Tool (PCPBT) are...

    http://nanohub.org/resources/6836

  10. K-12: Introduction to Quantum Wells

    02 Feb 2009 | Teaching Materials | Contributor(s): David Beck, Mark M Budnik

    A lesson plan for a 20-30 minute exercise for 4th and 5th grade Gifted and Talented students to explore the concept of quantum wells. The objectives of the lesson are: * The students will be...

    http://nanohub.org/resources/5925

  11. Real space first-principles semiempirical pseudopotentials for Fe/MgO/Fe

    03 Dec 2008 | Downloads | Contributor(s): Kirk H. Bevan

    A set of semiempirical pseudopotentials for the atomistic modeling of Fe/MgO/Fe tunnel junctions. See the attached document for a full description of their derivation and the modeling...

    http://nanohub.org/resources/5997

  12. First Principles Non-Equilibrium Green's Function Modeling of Vacum and Oxide Barrier Tunneling

    01 Dec 2008 | Papers | Contributor(s): Kirk H. Bevan

    Vacuum and oxide barrier electron tunneling phenomena have been studied at length for several decades. Yet with electron device barrier widths now commonly measured in atomic units, complex...

    http://nanohub.org/resources/5957

  13. Assembly for Nanotechnology Survey Courses

    06 Nov 2008 | Tools | Contributor(s): Gerhard Klimeck, Dragica Vasileska

    Educational Tools for Classroom and Homework use to introduce nanotechnology concepts

    http://nanohub.org/resources/antsy

  14. AQME - Advancing Quantum Mechanics for Engineers

    21 Aug 2008 | Tools | Contributor(s): Gerhard Klimeck, Xufeng Wang, Dragica Vasileska

    One-stop-shop for teaching quantum mechanics for engineers

    http://nanohub.org/resources/aqme

  15. Lecture 3A: Spin Transport

    20 Aug 2008 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: 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...

    http://nanohub.org/resources/5269

  16. Lecture 3B: Spin Transport

    20 Aug 2008 | Online Presentations | Contributor(s): Supriyo Datta

    Objective: 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...

    http://nanohub.org/resources/5270

  17. ABACUS - Assembly of Basic Applications for Coordinated Understanding of Semiconductors

    08 Aug 2008 | Tools | Contributor(s): Xufeng Wang, Dragica Vasileska, Gerhard Klimeck

    One-stop-shop for teaching semiconductor device education

    http://nanohub.org/resources/abacus

  18. Piece-Wise Constant Potential Barriers Tool

    08 Aug 2008 | Tools | Contributor(s): Xufeng Wang, Samarth Agarwal, Gerhard Klimeck, Dragica Vasileska, Mathieu Luisier, Jean Michel D Sellier

    Transmission and the reflection coefficient of a five, seven, nine, eleven and 2n-segment piece-wise constant potential energy profile

    http://nanohub.org/resources/pcpbt

  19. Spin Coupled Quantum Dots

    05 Aug 2008 | Tools | Contributor(s): John Shumway, Matthew Gilbert

    Path integral calculation of exchange coupling of spins in neighboring quantum dots.

    http://nanohub.org/resources/spincoupleddots

  20. Tunneling Through Triangular Barrier: an Exercise for PCPBT

    24 Jul 2008 | Teaching Materials | Contributor(s): Dragica Vasileska, Gerhard Klimeck

    This exercise teaches the users that a very good result can be obtained when the triangular barrier is approximated with 11 segment piece-wise constant potential barrier...

    http://nanohub.org/resources/5102