Tags: quantum transport

Resources (1-20 of 250)

  1. Piece-Wise Constant Potential Barrier Sim2L

    01 Feb 2023 | | Contributor(s):: Daniel Mejia

    Piece-Wise Constant Potential Barrier simulation using sim2l infrastructure

  2. Introduction to Quantum Transport

    30 Jan 2022 | | Contributor(s):: Supriyo Datta

    Everyone is familiar with the amazing performance of a modern smartphone, powered by a billion-plus nanotransistors, each having an active region that is barely a few hundred atoms long. The same amazing technology has also led to a deeper understanding of the nature of current flow and heat...

  3. IWCN 2021: How to Preserve the Kramers-Kronig Relation in Inelastic Atomistic Quantum Transport Calculations

    15 Jul 2021 | | Contributor(s):: Daniel Alberto Lemus, James Charles, Tillmann Christoph Kubis

    The nonequilibrium Green’s function method (NEGF) is often used to predict quantum transport in atomically resolved nanodevices. This yields a high numerical load when inelastic scattering is included. Atomistic NEGF had been regularly applied on nanodevices, such as nanotransistors....

  4. IWCN 2021: Interfacial Trap Effects in InAs Gate-all-around Nanowire Tunnel Field- Effect Transistors: First-Principles-Based Approach

    15 Jul 2021 | | Contributor(s):: Hyeongu Lee, SeongHyeok Jeon, Cho Yucheol, Mincheol Shin

    In this work, we investigated the effects of the traps, Arsenic dangling bond (AsDB) and Arsenic anti-site (AsIn) traps, in InAs gate-all-around nanowire TFETs, using the trap Hamiltonian obtained from the first-principles calculations. The transport properties were treated by nonequilibrium...

  5. IWCN 2021: Quantum Transport Simulation on 2D Ferroelectric Tunnel Junctions

    15 Jul 2021 | | Contributor(s):: Eunyeong Yang, Jiwon Chang

    In this work, we consider a simple asymmetric structure of metal-ferroelectric-metal (MFM) FTJs with two different ferroelectric materials, Hf0.5Zr0.5O2(HZO) and CuInP2S6(CIPS), respectively. To investigate the performance of FTJs theoretically, we first explore complex band structures of HZO...

  6. IWCN 2021: Computational Research of CMOS Channel Material Benchmarking for Future Technology Nodes: Missions, Learnings, and Remaining Challenges

    15 Jul 2021 | | Contributor(s):: raseong kim, Uygar Avci, Ian Alexander Young

    In this preentation, we review our journey of doing CMOS channel material benchmarking for future technology nodes. Through the comprehensive computational research for past several years, we have successfully projected the performance of various novel material CMOS based on rigorous physics...

  7. IWCN 2021: Ab initio Quantum Transport Simulation of Lateral Heterostructures Based on 2D Materials: Assessment of the Coupling Hamiltonians

    14 Jul 2021 | | Contributor(s):: Adel Mfoukh, Marco Pala

    Lateral heterostructures based on lattice-matched 2D materials are a promising option to design efficient electron devices such as MOSFETs [1], tunnel-FETs [2] and energy-filtering FETs [3]. In order to rigorously describe the transport through such heterostructures, an ab-initio approach based...

  8. EOLAS NEGF Transport Simulator

    18 May 2021 | | Contributor(s):: Alfonso Sanchez, Thomas Kelly

    Effective-mass / NEGF simulator for electronic transport in Si nanostructures

  9. Recursive algorithm for NEGF in Python GPU version

    02 Feb 2021 | | Contributor(s):: Ning Yang, Tong Wu, Jing Guo

    This folder contains two Python functions for GPU-accelerated simulation, which implements the recursive algorithm in the non-equilibrium Green’s function (NEGF) formalism. Compared to the matlab implementation [1], the GPU version allows massive parallel running over many cores on GPU...

  10. A Single Atom Transistor: The Ultimate Scaling Limit – Entry into Quantum Computing

    14 Oct 2020 | | Contributor(s):: Gerhard Klimeck

    50th European Solid-State Device Research Conference

  11. Bandstructure Effects in Nano Devices With NEMO: from Basic Physics to Real Devices and to Global Impact on nanoHUB.org

    08 Mar 2019 | | Contributor(s):: Gerhard Klimeck

    This presentation will intuitively describe how bandstructure is modified at the nanometer scale and what some of the consequences are on the device performance.

  12. Quantum Coherent Transport in Atoms & Electrons

    21 Jun 2017 | | Contributor(s):: Yong P. Chen

    I will discuss some recent experimental examples from my lab studying quantum coherent transport and interferometry in electrons as well as cold atoms.   For example, phase coherent electron transport and interference around a cylinder realized in a nanowire of topological insulator...

  13. Progress on Quantum Transport Simulation Using Empirical Pseudopotentials

    10 Feb 2016 | | Contributor(s):: Jingtian Fang, William Gerard Hubert Vandenberghe, Massimo V Fischetti

    IWCE 2015 presentation. After performing one-dimensional simulation of electron transport in narrow quantum wires without gate control in (Fang et al., 2014) and (Fu and Fischetti, 2013) using the open boundary-conditions full-band plane-wave transport formalism derived in (Fu, 2013), we now...

  14. Wigner Function Approach to Quantum Transport in QCLs

    10 Feb 2016 | | Contributor(s):: Olafur Jonasson, Irena Knezevic

    IWCE 2015 presentation.  Abstract and more information to be added at a later date.

  15. nanoHUB-U Fundamentals of Nanoelectronics B: Quantum Transport: Scientific Overview

    11 Dec 2015 | | Contributor(s):: Supriyo Datta

    This video is the Scientific Overview for the nanoHUB-U course "Fundamentals of  Nanoelectronics Part B: Quantum Transport" by Supriyo Datta.

  16. MATLAB codes from the "Lessons from Nanoelectronics"

    10 Dec 2015 | | Contributor(s):: Supriyo Datta

    The .zip archive contains all the codes from the book.You can download and unzip the file to access the codes organized in folders (titled by the Lecture number).You can run this on MATLAB or use the OCTAViEw tool on nanoHUB.

  17. Analyzing Variability in Short-Channel Quantum Transport from Atomistic First Principles

    05 Nov 2015 | | Contributor(s):: Qing Shi

    IWCE 2015 invited presentation.  Due to random impurity fluctuations, the device-to-device variability is a serious challenge to emerging nanoelectronics. In this talk I shall present a theoretical formalism and its numerical realization to predict quantum-transport variability from...

  18. 3D Topological Insulator Nanowire NEGF Simulation on GPU

    28 May 2015 | | Contributor(s):: Gaurav Gupta

    This code developed in C and CUDA simulates the carrier transport in three-dimensional (3D) topological insulator (TI) nanowire, with Bi2Se3 as exemplar material, with or without impurities, edge defects, acoustic phonons and vacancies for semi-infinite or metallic...

  19. Quantum Point Contact

    02 Feb 2015 | | Contributor(s):: Richard Akis, Shaikh S. Ahmed, Mohammad Zunaidur Rashid, Richard Akis

    Simulates the conductance and associated wavefunctions of Quantum Point Contacts.

  20. Magnetic Tunnel Junction Lab

    23 Sep 2013 | | Contributor(s):: Samiran Ganguly, Deepanjan Datta, Chen Shang, Sankarsh Ramadas, Sayeef Salahuddin, Supriyo Datta

    Calculate Resistance, Tunneling Magneto Resistance, Spin Torques, and Switching characteristics of a Magnetic Tunnel Junction