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Electron Spin for Classical Information Processing: Logic Devices, Gates and Circuits

Supriyo Bandyopadhyay


In electronics, information has been traditionally stored, processed and communicated using an electron’s charge. This paradigm is increasingly turning out to be energy-inefficient, because movement of charge within an information-processing device invariably causes current flow and an associated dissipation. Replacing “charge” with the “spin” of an electron to encode information may eliminate much of this dissipation and lead to more energy-efficient “green electronics”. This realization has spurred significant research in spintronic devices and circuits where spin either directly acts as the physical variable for hosting information or augments the role of charge. In this talk, I will discuss and elucidate some of these ideas, and highlight their strengths and weaknesses. I will focus primarily on spin based logic gates that are capable of performing specific Boolean logic operations, and combinational circuits or architectures (equivalent to many gates working in unison) that are capable of performing universal computation.


Supriyo Bandyopadhyay is a Professor of Electrical and Computer Engineering, and Professor of Physics at Virginia Commonwealth University, Richmond, USA, where he directs the Quantum Device Laboratory engaged in research in various aspects of nanotechnology. Prior to joining Virginia Commonwealth University, he had served as a visiting faculty member at Purdue University, West Lafayette, Indiana and as faculty member at University of Notre Dame and University of Nebraska-Lincoln.

Prof. Bandyopadhyay has authored and co-authored over 300 research publications and given more than 80 invited talks and colloquia across four continents. He serves as the Chair of the Institute of Electrical and Electronics Engineers (IEEE) Technical Committee on Spintronics (Nanotechnology Council) as well as the Technical Committee on Compound Semiconductor Devices and Circuits (Electron Device Society). He is an IEEE Electron Device Society Distinguished Lecturer and served as a Vice President of the IEEE Nanotechnology Council.

Prof. Bandyopadhyay is a Fellow of the Institute of Electrical and Electronics Engineers, the American Physical Society, the Institute of Physics (UK), the Electrochemical Society and the American Association for the Advancement of Science.

Supriyo Bandyopadhyay Headshot
Supriyo Bandyopadhyay
Virginia Commonwealth University
EEB 105
12 Jan 2010, 10:30am until 1:30am