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Quantum Spins in the Solid-State: An Atomistic Material-to-Device Modeling Approach
30 Aug 2017 | | Contributor(s):: Rajib Rahman
In this talk, I will present an atomistic modeling approach that combines intrinsic material and extrinsic device properties under a unified framework to describe spins and their interactions with theenvironment. This approach captures important spin properties such as exchange, spin-orbit,...
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Spin-Orbitronics: A Route to Control Magnets via Spin-Orbit Interaction
21 Jul 2017 | | Contributor(s):: Upadhyaya, Pramey
In this talk, I will present this “spin-orbitronic” control for various magnetic systems. In particular, we will focus on the example of spin-orbit-induced manipulation of magnetic domain walls and skyrmions, i.e. particle-like magnetic configurations capable of storing and...
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Building a Topological Quantum Computer 101
20 Jun 2017 | | Contributor(s):: Michael Freedman
Michael Freeman shares his perspective on how we should approach building a quantum computer, starting with the mathematical roots and moving through the physics to concrete engineering and materials growth challenges on which success will hinge. He will then discuss a new, enhanced,...
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Soft, Biocompatible Optoelectronic Interfaces to the Brain
08 Jun 2017 | | Contributor(s):: John A. Rogers
In this talk, we will describe foundational concepts in physics and materials science for these types of technologies, in 1D, 2D and 3D architectures. Examples in system level demonstrations include experiments on freely moving animals with ‘cellular-scale’, injectable optofluidic...
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Circuits on Cellulose: From Transistors to LEDs, from Displays to Microfluidics on Paper
14 Feb 2017 | | Contributor(s):: Andrew Steckl
In this lecture I will review the use of cellulose-based paper as a material in a variety of electronic (and related) applications, including transistors, light emitting diodes, displays, microfluidics. Paper is a very attractive material for many device applications: very low cost, available in...
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Topological Spintronics: from the Haldane Phase to Spin Devices
31 Jan 2017 | | Contributor(s):: Nitin Samarth
e provide a perspective on the recent emergence of “topological spintronics,” which relies on the existence of helical Dirac electrons in condensed matter. Spin‐ and angle‐resolved photoemission spectroscopy shows how the spin texture of these electronic states can be engineered...
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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].
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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...
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Low Temperature Enhancement of the Thermoelectric Seebeck Coefficient in Semiconductor Nanoribbons
09 Nov 2016 | | Contributor(s):: Kommini Adithya, Zlatan Aksamija
IWCE 2015 Presentation. We propose a novel approach to achieving a narrow window-shaped TDF through a combination of a step-like 2-dimensional density-of-states (DOS) and inelastic optical phonon scattering. A shift in the onset of scattering with respect to the step-like DOS creates a TDF which...
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Finite Difference Schemes for k.p Models: A Comparative Study
01 Nov 2016 | | Contributor(s):: Jun Huang, Kuang-Chung Wang, William R Frensley, Gerhard Klimeck
IWCE 2015 Presentation.
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15-Band Spectral Envelope Function Formalism Applied to Broken Gap Tunnel Field-Effect Transistors
01 Nov 2016 | | Contributor(s):: Devin Verreck, Maarten Van de Put, Anne Verhulst, Bart Soree, G. Groeseneken, Ashish Dabral
IWCE 2015 presentation.
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The Role of Dimensionality on Phonon-Limited Charge Transport: from CNTs to Graphene
27 Oct 2016 | | Contributor(s):: Jing Li, Yann-Michel Niquet
IWCE 2015 presentation.
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Transferable Tight Binding Model for Strained Heterostructures
22 Oct 2016 | | Contributor(s):: Yaohua Tan, Michael Povolotskyi, Tillmann Christoph Kubis, Timothy Boykin, Gerhard Klimeck
IWCE 2015 presentation.
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NEMO5 and 2D Materials: Tuning Bandstructures, Wave Functions and Electrostatic Screening
19 Oct 2016 | | Contributor(s):: Tillmann Christoph Kubis
In this talk, I will briefly discuss the MLWF approach and compare it to DFT and atomistic tight binding. Initial results using the MLWF approach for 2D material based devices will be discussed and compared to experiments. These results unveil systematic band structure changes as functions of...
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Many Body Effects on Optical Properties of Graphene
13 Oct 2016 | | Contributor(s):: Subhasis Ghosh
Graphene, a two-dimensional (2D) material shows remarkable optical and electronic properties, such as a linear energy dispersion, chirality and half-integer quantum Hall effect. Multilayer graphene flakes, held together by weak van der Waals forces have also attracted attention due to...
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Prospects for Using Magnetic Insulators in Spintronics
29 Sep 2016 | | Contributor(s):: Mingzhong Wu
This presentation consists of two parts, which together will provide some perspective on the future of using magnetic insulators in spintronics. The first part will touch on the feasibility of using magnetic insulators, in particular, Y3Fe5O12 and BaFe12O19, to produce pure spin currents...
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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...
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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...
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A Short Overview of the NEEDS Initiative
06 Jun 2016 | | Contributor(s):: Mark Lundstrom
The talk is a brief overview of the program that discusses the rationale, status, and plans for NEEDS.
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E304 L6.2.2: Nanoelectrics - Tunneling
04 May 2016 |