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Course on Beyond CMOS Computing

06 Jun 2013 | Teaching Materials | Contributor(s): Dmitri Nikonov

Complementary metal-oxide-semiconductor (CMOS) field effect transistors (FET) underpinned the development of electronics and information technology for the last 30 years. In an amazing saga of development, the semiconductor industry (with a leading role of Intel) has shrunk the size of these...

Uniform Methodology of Benchmarking Beyond-CMOS Devices

31 Oct 2012 | Online Presentations | 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...

Performance of Magnetic Quantum Cellular Automata and Limitations due to Thermal Noise

02 Jun 2011 | Papers | Contributor(s): Ajey Jacob, Dmitri Nikonov

Operation parameters of magnetic quantum cellular automata are evaluated for the purposes ofreliable logic operation. The dynamics if nanomagnets is simulated via Landau-Lifshitz-Gilbert equations with stochastic magnetic field corresponding to thermal fluctuations. It is found that in the...

Surface scattering: Made simple

03 Sep 2010 | Papers | Contributor(s): Dmitri Nikonov, Himadri Pal

Surface scattering in a quantum well.

Comparisons of macrospin and OOMMF simulations

26 Jan 2010 | Presentation Materials | Contributor(s): Dmitri Nikonov, George Bourianoff

Plots of switchign time of nanomagnets by spin torque calculated by macrospin model and micromagnetic tool OOMMF, compared side-by-side.D. E. Nikonov, G. I. Bourianoff, G. Rowlands, I. N. KrivorotovShould be read and cited in conjunction withhttp://arxiv.org/abs/1001.4578

Scattering in NEGF: Made simple

09 Nov 2009 | Papers | Contributor(s): Dmitri Nikonov, Himadri Pal, George Bourianoff

Formalism for describing electron-phonon scattering, surface scattering, and spin relaxation is dervied for the Keldysh non-equilibrium Green's functions (NEGF) method. Approximation useful for efficient numerical solution are described. The specific case of the nanoMOS simulator is...

Notes on Scattering and Mobility in 1D, 2D, and 3D

06 Nov 2009 | Teaching Materials | Contributor(s): Dmitri Nikonov, Md. Sayed Hasan, George Bourianoff

Derivation of the phonon-limited mobility is reviewed for electrons in bulk (3D) orquantum confined (2D and 1D) semiconductor structures. Analytical estimates are madethat show the mobility in quantum confined structures is, in general, lower or no higherthan in non-confined ones.

Simulation of highly idealized, atomic scale MQCA logic circuits

0.0 out of 5 stars

15 Nov 2007 | Papers | Contributor(s): Dmitri Nikonov, George Bourianoff

Spintronics logic devices based on majority gates formed by atomic-level arrangements of spins in the crystal lattice is considered. The dynamics of switching is modeled by time-dependent solution of the density-matrix equation with relaxation. The devices are shown to satisfy requirements for...

Animations of magnetic QCA operation

21 Oct 2007 | Downloads | Contributor(s): Dmitri Nikonov, George Bourianoff

Animations of an inverter and a majority gate operation for QCA logic for the paper"Simulation of highly idealized, atomic scale MQCA logic circuits"by Dmitri E. Nikonov, George I. Bourianoff, Paolo A. GarginiMore detailed description to follow.

MOSCNT: code for carbon nanotube transistor simulation

3.5 out of 5 stars

14 Nov 2006 | Downloads | Contributor(s): Siyu Koswatta, Jing Guo, Dmitri Nikonov

Ballistic transport in carbon nanotube metal-oxide-semiconductor field-effect transistors (CNT-MOSFETs) is simulated using the Non-equilibrium Green’s function formalism. A cylindrical transistor geometry with wrapped-around gate and doped source/drain regions are assumed. It should be noted...

recursive algorithm for NEGF in Matlab

13 Nov 2006 | Downloads | Contributor(s): Dmitri Nikonov, Siyu Koswatta

This zip-archive contains two Matlab functions for the recursive solution of the partial matrix inversion and partial 3-matrix multiplication used in the non-equilibrium Green’s function (NEGF) method.recuresealg3d.m- works for 3-diagonal matricesrecuresealgblock3d.m- works for 3-block-diagonal...

Taxonomy of spintronics (a zoo of devices)

5.0 out of 5 stars

02 Nov 2006 | Online Presentations | Contributor(s): Dmitri Nikonov, George Bourianoff

The presentation deals with classification of logic devices based on electron spin as a computational variable. Requirements for logic devices are reviewed. Specifically we focus on a) concatenability (output of one device can drive another) and b) the complete set of Boolean operators (NOT,...

Modeling of Nanoscale Devices

19 Oct 2006 | Papers | Contributor(s): M. P. Anantram, Mark Lundstrom, Dmitri Nikonov

We aim to provide engineers with an introductionto the nonequilibriumGreen’s function (NEGF) approach, which is a powerful conceptual tool and a practical analysismethod to treat nanoscale electronic devices with quantum mechanicaland atomistic effects. We first review the basis for the...

MATLAB DOs and DON'Ts

14 May 2006 | Online Presentations | Contributor(s): Dmitri Nikonov

Matlab is widely used for simulations but is believed to be unsuitable for complex projects and to produce slow-running software tools. The presentation argues that blind copying of methods typical of C and Fortran is responsible for such inefficiencies; the presentation teaches avoidance of...