Tags: tunneling

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  1. Electron Transport in Schottky Barrier CNTFETs

    24 Oct 2017 | | Contributor(s):: Igor Bejenari

    A given review describes models based on Wentzel-Kramers-Brillouin approximation, which are used to obtain I-V characteristics for ballistic CNTFETs with Schottky-Barrier (SB) contacts. The SB is supposed to be an exponentially or linearly decaying function along the channel. The ...

  2. Modeling of Inter-ribbon Tunneling in Graphene

    11 Nov 2016 | | Contributor(s):: Maarten Van de Put, William Gerard Hubert Vandenberghe, Massimo V Fischetti

    IWCE presentation. In this paper we investigate the finite-size effect in nano-scaled graphene flakes. Improving on the bulk description, and because the structures are – atomistically speaking – large in size, we use the empirical pseudopotential method[2].

  3. NEMO5, a Parallel, Multiscale, Multiphysics Nanoelectronics Modeling Tool
: From Basic Physics to Real Devices and to Global Impact on nanoHUB.org

    10 Nov 2016 | | Contributor(s):: Gerhard Klimeck

    The Nanoelectronic Modeling tool suite NEMO5 is aimed to comprehend the critical multi-scale, multi-physics phenomena and deliver results to engineers, scientists, and students through efficient computational approaches. NEMO5’s general software framework easily includes any kind of...

  4. Auger Generation as an Intrinsic Limit to Tunneling Field-Effect Transistor Performance

    22 Sep 2016 | | Contributor(s):: Jamie Teherani

    Many in the microelectronics field view tunneling field-effect transistors (TFETs) as society’s best hope for achieving a > 10× power reduction for electronic devices; however, despite a decade of considerable worldwide research, experimental TFET results have significantly...

  5. NEMO5, a Parallel, Multiscale, Multiphysics Nanoelectronics Modeling Tool


    19 Sep 2016 | | Contributor(s):: Gerhard Klimeck

    The Nanoelectronic Modeling tool suite NEMO5 is aimed to comprehend the critical multi-scale, multi-physics phenomena and deliver results to engineers, scientists, and students through efficient computational approaches. NEMO5’s general software framework easily includes any kind of...

  6. E304 L6.2.2: Nanoelectrics - Tunneling

    04 May 2016 |

  7. Atomistic Modeling of Nano Devices: From Qubits to Transistors

    13 Apr 2016 | | Contributor(s):: Rajib Rahman

    In this talk, I will describe such a framework that can capture complex interactions ranging from exchange and spin-orbit-valley coupling in spin qubits to non-equilibrium charge transport in tunneling transistors. I will show how atomistic full configuration interaction calculations of exchange...

  8. Tunnel FETs - Device Physics and Realizations

    10 Jul 2013 | | Contributor(s):: Joachim Knoch

    Here, the operating principles of TFETs will be discussed in detail and experimental realizations as well as simulation results will be presented. In particular, the role of the injecting source contact will be elaborated on.

  9. Inelastic Transport in Carbon Nanotube Electronic and Optoelectronic Devices

    28 Jun 2013 | | Contributor(s):: Siyu Koswatta

    Discovered in the early 1990's, carbon nanotubes (CNTs) are found to have exceptional physical characteristics compared to conventional semiconductor materials, with much potential for devices surpassing the performance of present-day electronics. Semiconducting CNTs have large carrier mobilities...

  10. Uniform Methodology of Benchmarking Beyond-CMOS Devices

    31 Oct 2012 | | Contributor(s):: Dmitri Nikonov

    Multiple logic devices are presently under study within the Nanoelectronic Research Initiative (NRI) to carry the development of integrated circuits beyond the CMOS roadmap. Structure and operational principles of these devices are described.Theories used for benchmarking these devices are...

  11. Energies and Lifetimes with Complex-Scaling

    02 Apr 2012 | | Contributor(s):: Daniel Lee Whitenack, Adam Wasserman

    Calculate the resonance energies and lifetimes of a user-defined potential with a uniform complex-scaling transformation.

  12. NEMO5 Tutorial 6B: Device Simulation - Quantum Transport in GaSb/InAs Tunneling FET

    16 Jul 2012 | | Contributor(s):: Yu He

  13. Tunneling

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

    This set of slides describes the quantum-mechanical process for tunneling and how it is accounted for in modeling semiconductor devices. We explain WKB approximation, transfer matrix approach and the Tsu-Esaki formula for the calculation of the current.

  14. Outdoing Maxwell’s Demon: Taming Molecular Wildness

    27 Apr 2011 | | Contributor(s):: Dudley R. Herschbach

    This talk describes these developments, illustrating means to analyze and control molecular trajectories and spatial orientation and to select rotational and vibrational states, with applications to elucidating chemical reaction dynamics.

  15. Additional Tutorials on Selected Topics in Nanotechnology

    23 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.

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

    23 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.

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

    23 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...

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

    23 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?

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

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

    Demonstration of thePiece-Wise Constant Potential Barriers Tool.

  20. ME 597 Lecture 1: Review of Quantum Tunneling/Introduction to STM

    31 Aug 2010 | | Contributor(s):: Ron Reifenberger

    Topics:Quantum TunnelingThe STM – basic ideaRecommended Reading: See References below.