Date of Award
8-2018
Degree Type
Dissertation
Degree Name
Doctor of Philosophy (PhD)
Department
Electrical and Computer Engineering
Committee Chair
Kaushik Roy
Committee Member 1
Anand Raghunathan
Committee Member 2
Vijay Raghunathan
Committee Member 3
Byunghoo Jung
Abstract
Present day computers expend orders of magnitude more computational resources to perform various cognitive and perception related tasks that humans routinely perform everyday. This has recently resulted in a seismic shift in the field of computation where research efforts are being directed to develop a neurocomputer that attempts to mimic the human brain by nanoelectronic components and thereby harness its efficiency in recognition problems. Bridging the gap between neuroscience and nanoelectronics, this thesis demonstrates the encoding of biological neural and synaptic functionalities in the underlying physics of electron spin. Description of various spin-transfer torque mechanisms that can be potentially utilized for realizing neuro-mimetic device structures is provided. A cross-layer perspective extending from the device to the circuit and system level is presented to envision the design of an All-Spin neuromorphic processor enabled with on-chip learning functionalities. Device-circuit-algorithm co-simulation framework calibrated to experimental results suggest that such All-Spin neuromorphic systems can potentially achieve almost two orders of magnitude energy improvement in comparison to state-of-the-art CMOS implementations.
Recommended Citation
Sengupta, Abhronil, "Efficient Neuromorphic Computing Enabled by Spin-Transfer Torque: Devices, Circuits and Systems" (2018). Open Access Dissertations. 2065.
https://docs.lib.purdue.edu/open_access_dissertations/2065