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Resources (1-20 of 30)

1. ABACUS Tool Suite and Bandstructure and Band Models (Fall 2023)

   22 Aug 2023 | | Contributor(s):: Gerhard Klimeck

   In the third session, Dr. Klimeck will give a brief overview of ABACUS and demonstrate several bandstructure tools. With these, students can explore the Standard Periodic Potential aka Kronig-Penney model as well as bandstructure formation by transmission through finite barriers....

2. ABACUS Bandstructure Models (Spring 2022)

   05 May 2022 | | Contributor(s):: Gerhard Klimeck

   In the third session, Dr. Klimeck will give a brief overview of ABACUS and demonstrate several bandstructure tools. With these, students can explore the Standard Periodic Potential aka Kronig-Penney model as well as bandstructure formation by transmission through finite barriers....

3. ABACUS Bandstructure Models (Winter 2021)

   21 Dec 2021 | | Contributor(s):: Gerhard Klimeck

   In the third session, Dr. Klimeck will give a brief overview of ABACUS and demonstrate several bandstructure tools. With these, students can explore the Standard Periodic Potential aka Kronig-Penney model as well as bandstructure formation by transmission through finite barriers...

4. Exercise: Resonant Tunneling Diode

   13 Jul 2011 | | Contributor(s):: Dragica Vasileska, Gerhard Klimeck

   This is an exercise for resonant tunneling diode.

5. RTD Topic Page: Test for Resonant Tunneling Diode

   13 Jul 2011 | | Contributor(s):: Dragica Vasileska, Gerhard Klimeck

   This is a test for Resonant Tunneling Diode topic page.

6. Additional Tutorials on Selected Topics in Nanotechnology

   29 Mar 2011 | | Contributor(s):: Gerhard Klimeck, Umesh V. Waghmare, Timothy S Fisher, N. S. Vidhyadhiraja

   Select tutorials in nanotechnology, a part of the 2010 NCN@Purdue Summer School: Electronics from the Bottom Up.

7. Tutorial 4: Far-From-Equilibrium Quantum Transport

   29 Mar 2011 | | Contributor(s):: Gerhard Klimeck

   These lectures focus on the application of the theories using the nanoelectronic modeling tools NEMO 1- D, NEMO 3-D, and OMEN to realistically extended devices. Topics to be covered are realistic resonant tunneling diodes, quantum dots, nanowires, and Ultra-Thin-Body Transistors.

8. Tutorial 4a: High Bias Quantum Transport in Resonant Tunneling Diodes

   29 Mar 2011 | | Contributor(s):: Gerhard Klimeck

   Outline:Resonant Tunneling Diodes - NEMO1D: Motivation / History / Key InsightsOpen 1D Systems: Transmission through Double Barrier Structures - Resonant TunnelingIntroduction to RTDs: Linear Potential DropIntroduction to RTDs: Realistic Doping ProfilesIntroduction to RTDs: Relaxation Scattering...

9. Tutorial 4c: Formation of Bandstructure in Finite Superlattices (Exercise Session)

   29 Mar 2011 | | Contributor(s):: Gerhard Klimeck

   How does bandstructure occur? How large does a repeated system have to be? How does a finite superlattice compare to an infinite superlattice?

10. Tutorial 4d: Formation of Bandstructure in Finite Superlattices (Exercise Demo)

    29 Mar 2011 | | Contributor(s):: Gerhard Klimeck

    Demonstration of thePiece-Wise Constant Potential Barriers Tool.

11. 2010 NCN@Purdue Summer School: Electronics from the Bottom Up

    18 Jan 2011 |

    Electronics from the Bottom Up seeks to bring a new perspective to electronic devices – one that is designed to help realize the opportunities that nanotechnology presents.

12. Analytical and Numerical Solution of the Double Barrier Problem

    28 Jun 2010 | | Contributor(s):: Gerhard Klimeck, Parijat Sengupta, Dragica Vasileska

    Tunneling is fully quantum-mechanical effect that does not have classical analog. Tunneling has revolutionized surface science by its utilization in scanning tunneling microscopes. In some device applications tunneling is required for the operation of the device (Resonant tunneling diodes,...

13. Piece-Wise Constant Potential Barrier Tool MATLAB Code

    19 Jun 2010 | | Contributor(s):: Dragica Vasileska, Gerhard Klimeck

    this is the MATLAB code of the PCPBT in the effective mass approximation.

14. Nanotechnology Animation Gallery

    22 Apr 2010 | | Contributor(s):: Saumitra Raj Mehrotra, Gerhard Klimeck

    Animations and visualization are generated with various nanoHUB.org tools to enable insight into nanotechnology and nanoscience. Click on image for detailed description and larger image download. Additional animations are also...

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

    09 Mar 2010 | | 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 characteristics, and resonance energies. Also demonstrated is a RTD simulation using a Thomas-Fermi...

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

    09 Mar 2010 | | 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 potential model.

17. Nanoelectronic Modeling: Exercises 1-3 - Barrier Structures, RTDs, and Quantum Dots

    27 Jan 2010 | | Contributor(s):: Gerhard Klimeck

    Exercises:Barrier StructuresUses: Piece-Wise Constant Potential Barrier ToolResonant Tunneling DiodesUses: Resonant Tunneling Diode Simulation with NEGF • Hartree calculation • Thomas Fermi potentialQuantum DotsUses: Quantum Dot Lab • pyramidal dot

18. Nanoelectronic Modeling Lecture 19: Introduction to RTDs - Asymmetric Structures

    27 Jan 2010 | | Contributor(s):: Gerhard Klimeck

    This lecture explores this effect in more detail by targeting an RTD that has a deliberate asymmetric structure. The collector barrier is chosen thicker than the emitter barrier. With this set-up we expect that the tunneling rate into the RTD from the emitter is faster than the tunneling rate...

19. Nanoelectronic Modeling Lecture 18: Introduction to RTDs - Quantum Charge Self-Consistency (Hartree)

    27 Jan 2010 | | Contributor(s):: Gerhard Klimeck

    In this semi-classical charge and potential model the quantum mechanical simulation is performed once and the quantum mechanical charge is in general not identical to the semi-classical charge.

20. Nanoelectronic Modeling Lecture 17: Introduction to RTDs - Relaxation Scattering in the Emitter

    27 Jan 2010 | | Contributor(s):: Gerhard Klimeck

    Realistic RTDs will have nonlinear electrostatic potential in their emitter. Typically a triangular well is formed in the emitter due to the applied bias and the emitter thus contains discrete quasi bound states.