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Purdue Microelectronics and Nanotechnology Overview
Online Presentations | 09 Sep 2021 | Contributor(s):: Samantha Nelson, Muhammad A. Alam, Joerg Appenzeller, Zhihong Chen, Supriyo Datta, David Janes, Gerhard Klimeck, Dana Weinstein, Pramey Upadhyaya, Peide "Peter" Ye
In today’s modern world, microelectronics has touched every aspect of our lives. None of us can imagine or live in a world without personal computers, smart phones, and probably very soon autonomous cars. To continue its expansion and go beyond the traditional semiconductor technologies,...
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Classical Computing with Topological States: Coping with a post-Moore World
Online Presentations | 21 Jun 2021 | Contributor(s):: Avik Ghosh
There are two examples I will focus on ? one is doing conventional Boolean logic at low power below the thermal Boltzmann limit, using the topological properties of Dirac fermions to control transmission across a gated interface. The other is doing collective computing using temporal state...
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FDNS21: Predictive Models in Materials Making, 2D, 3D, 2.1D
Online Presentations | 27 Apr 2021 | Contributor(s):: Boris I Yakobson
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Spintronics Functionalities of Topological Semimetals
Online Presentations | 13 Nov 2020
In this presentation, we theoretically study the spin-transfer torque effect and dynamics of magnetic textures in magnetic Weyl semimetals [3-6].
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Probabilistic Computing: From Materials and Devices to Circuits and Systems
Online Presentations | 07 Sep 2020 | Contributor(s):: Kerem Yunus Camsari
In this talk, I will describe one such path based on the concept of probabilistic or p-bits that can be scalably built with present-day technology used in magnetic memory devices.
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Micromagnetics and OOMMF Lecture 3: Advanced Topics
Online Presentations | 20 Aug 2020 | Contributor(s):: Michael Joseph Donahue
Common Pitfalls, Working with MIF Files, Command-line Tools, Working with Extensions
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Electronic States of Novel Topological Materials Studied by ARPES
Online Presentations | 14 Jul 2020 | Contributor(s):: Takafumi Sato
In this talk, we will present novel electronic states of some exotic topological materials such as TSMs and topological superconductors, studied by angle-resolved photoemission spectroscopy (ARPES). We will focus on the following subjects.
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Stochastic Computing for Brainware LSI
Online Presentations | 29 Jun 2020
This talk reviews stochastic computation and discusses the advantages and disadvantages with the recent developments in hardware. In addition, stochastic-computing based brainware LSIs (BLSIs) are introduced.
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All-optical Magnetization Switching Mediated by Laser-induced Spin Current
Online Presentations | 21 May 2020 | Contributor(s):: Satoshi Iihama
The manipulation of magnetization solely by the ultrashort laser pulse has attracted attention for future ultrafast and low-energy spintronics device [1-4]. GdFeCo has been predominant materials system showing all-optical single-shot magnetization switching. The magnetization switching of GdFeCo...
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Resistively-Detected NMR and Nuclear Resonance Imaging
Online Presentations | 07 May 2020 | Contributor(s):: Yoshiro Hirayama
NMR provides us versatile tool to physical, chemical, biological, and medical characterizations. However, conventional NMR suffers low sensitivity and cannot be applied to semiconductor quantum systems, such as single quantum well or wire. To overcome these difficulties,...
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2D Valley-Spin Transport in Transition Metal Dichalcogenides
Online Presentations | 07 May 2020 | Contributor(s):: Zhihong Chen
In this talk, we first report that valley current can be electrically induced and detected through the valley Hall effect and inverse valley Hall effect, respectively, in monolayer molybdenum disulfide. We compare temperature and channel length dependence of non-local electrical signals in...
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Magnetic Tunnel Junction (MTJ) as Stochastic Neurons and Synapses: Stochastic Binary Neural Networks, Bayesian Inferencing, Optimization Problems
Online Presentations | 26 Oct 2018 | Contributor(s):: Abhronil Sengupta, Kaushik Roy
In this presentation, we provide a multi-disciplinary perspective across the stack of devices, circuits, and algorithms to illustrate how the stochastic switching dynamics of spintronic devices in the presence of thermal noise can provide a direct mapping to the units of such computing...
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p-bits for Probabilistic Spin Logic (PSL): A Brief Introduction
Online Presentations | 02 Jul 2018 | Contributor(s):: Supriyo Datta
Digital electronics is based on stable bits that can have one of two values, 0 and 1. At the other extreme we have quantum computing using using q-bits that can be in superposition states that are 0 and 1 at the same time. In our recent work we have introduced a concept that is intermediate...
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p-bits for Probabilistic Spin Logic (PSL)
Online Presentations | 10 May 2018 | Contributor(s):: Supriyo Datta
Digital electronics is based on stable bits that can have one of two values, 0 and 1. At the other extreme we have quantum computing using using q-bits that can be in superposition states that are 0 and 1 at the same time. In our recent work we have introduced a concept that is intermediate...
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Quantum Spins in the Solid-State: An Atomistic Material-to-Device Modeling Approach
Online Presentations | 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
Online Presentations | 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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Topological Spintronics: from the Haldane Phase to Spin Devices
Online Presentations | 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 using...
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Valley Dependent g-factors in Silicon: Role of Spin-Orbit and Micromagnets
Online Presentations | 13 Dec 2016 | Contributor(s):: Rajib Rahman
In this talk I will show that spin splittings in silicon quantum dots are inherently valley-dependent. Interface disorder, such as monoatomic steps, can strongly affect the intrinsic spin-orbit coupling and can cause device-to-device variations in g-factors. I will also describe the anisotropy of...
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Prospects for Using Magnetic Insulators in Spintronics
Online Presentations | 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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Atomistic Modeling of Nano Devices: From Qubits to Transistors
Online Presentations | 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...