Publication

Two Dimensional Quantum Mechanical Simulation of Low Dimensional Tunneling Devices

Mihai Adrian Ionescu, Cem Alper, Livio Lattanzio, José Luis Padilla de la Torre, Pierpaolo Palestri
2014
Conference Papers

Abstract

We present a 2-D quantum mechanical simulation framework based on self-consistent solutions of Schrodinger-Poisson system, using the Finite Element Method. The quantum mechanical model includes direct as well as phonon-assisted transitions and it is applied to Germanium electron-hole bilayer tunnel FETs (EHBTFET). It is found that 21) direct tunneling through the underlap regions may degrade the subthreshold characteristic of germanium EHBTFETs and requires careful device optimization to make the tunneling in the overlap region dominate over the parasitic paths.

Official source

https://infoscience.epfl.ch/entities/publication/893e0e93-5ab1-4b26-b9eb-1d4873a742e9

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Mihai Adrian Ionescu, Cem Alper, Livio Lattanzio, José Luis Padilla de la Torre, Pierpaolo Palestri
2014
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/893e0e93-5ab1-4b26-b9eb-1d4873a742e9

About this result

Related concepts (14)

Quantum tunnelling

In physics, quantum tunnelling, barrier penetration, or simply tunnelling is a quantum mechanical phenomenon in which an object such as an electron or atom passes through a potential energy barrier that, according to classical mechanics, the object does not have sufficient energy to enter or surmount. Tunneling is a consequence of the wave nature of matter, where the quantum wave function describes the state of a particle or other physical system, and wave equations such as the Schrödinger equation describe their behavior.

Quantum chemistry

Quantum chemistry, also called molecular quantum mechanics, is a branch of physical chemistry focused on the application of quantum mechanics to chemical systems, particularly towards the quantum-mechanical calculation of electronic contributions to physical and chemical properties of molecules, materials, and solutions at the atomic level. These calculations include systematically applied approximations intended to make calculations computationally feasible while still capturing as much information about important contributions to the computed wave functions as well as to observable properties such as structures, spectra, and thermodynamic properties.

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A quantum computer is a computer that exploits quantum mechanical phenomena. At small scales, physical matter exhibits properties of both particles and waves, and quantum computing leverages this behavior, specifically quantum superposition and entanglement, using specialized hardware that supports the preparation and manipulation of quantum states. Classical physics cannot explain the operation of these quantum devices, and a scalable quantum computer could perform some calculations exponentially faster than any modern "classical" computer.

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