tag: Spintronics

Efficient Spin-Orbit Torque Switching with Non-Epitaxial Chalcogenide Heterostructures
By Technical Paper Link - 31 Jan, 2020 - Comments: 0

Abstract: "The spin–orbit torques (SOTs) generated from topological insulators (TIs) have gained increasing attention in recent years. These TIs, which are typically formed by epitaxially grown chalcogenides, possess extremely high SOT efficiencies and have great potential to be employed in next-generation spintronics devices. However, epitaxy of these chalcogenides is required to ensure the... » read more

Power/Performance Bits: Jan. 8
By Jesse Allen - 08 Jan, 2019 - Comments: 0

Ferrimagnetic memory Engineers at the National University of Singapore, Toyota Technological Institute, and Korea University propose a new type of spintronic memory that is 20 times more efficient and 10 times more stable than commercial ones. In spintronic devices, data is stored depending on up or down magnetic states. Current devices based on ferromagnets, however, suffer from a few issu... » read more

Power/Performance Bits: May 22
By Jesse Allen - 22 May, 2018 - Comments: 0

Sensing without battery power Engineers at the National University of Singapore developed an IoT-focused sensor chip that can continue operating when its battery runs out of energy. The chip, BATLESS, uses a power management technique that allows it to self-start and continue to function under dim light without any battery assistance. The chip can operate in two different modes: minimum-ene... » read more

Switching a Perpendicular Ferromagnetic Layer by Competing Spin Currents
By Technical Paper Link - 31 Mar, 2018 - Comments: 0

ABSTRACT "An ultimate goal of spintronics is to control magnetism via electrical means. One promising way is to utilize a current-induced spin-orbit torque (SOT) originating from the strong spin-orbit coupling in heavy metals and their interfaces to switch a single perpendicularly magnetized ferromagnetic layer at room temperature. However, experimental realization of SOT switching to date req... » read more

Power/Performance Bits: Feb. 13
By Jesse Allen - 13 Feb, 2018 - Comments: 0

Silicon spintronics Engineers at the University of California, Riverside, developed new methods to detect signals from spintronic components made of low-cost metals and silicon. Spintronic devices generate little heat, use relatively minuscule amounts of electricity, and would require no energy to maintain data in memory. However, previously developed spintronic devices depend on complex struc... » read more

Power/Performance Bits: July 18
By Jesse Allen - 18 Jul, 2017 - Comments: 0

Ad hoc "cache hierarchies" Researchers at MIT and Carnegie Mellon University designed a system that reallocates cache access on the fly, to create new "cache hierarchies" tailored to the needs of particular programs. Dubbed Jenga, the system distinguishes between the physical locations of the separate memory banks that make up the shared cache. For each core, Jenga knows how long it would t... » read more

System Bits: May 2
By Ann Mutschler - 02 May, 2017 - Comments: 0

AI systems echo human prejudices One of the concerns about the of future artificial intelligence systems includes the perception that these machine-based systems are coldly logical and objectively rational, however, this may not be the case. In fact, in a new study by Princeton University researchers has shown how machines can be reflections of their creators in potentially problematic ways. ... » read more

What’s Next For Transistors
By Mark LaPedus - 23 Jan, 2017 - Comments: 1

The IC industry is moving in several different directions at once. The largest chipmakers continue to march down process nodes with chip scaling, while others are moving towards various advanced packaging schemes. On top of that, post-CMOS devices, neuromorphic chips and quantum computing are all in the works. Semiconductor Engineering sat down to discuss these technologies with Marie Semeri... » read more

Power/Performance Bits: June 7
By Jesse Allen - 07 Jun, 2016 - Comments: 0

Tiny lasers on silicon A group of scientists from Hong Kong University of Science and Technology, the University of California, Santa Barbara, Sandia National Laboratories, and Harvard University were able to fabricate tiny lasers directly on silicon. To do this, they first had to resolve silicon crystal lattice defects to a point where the cavities were essentially equivalent to those gr... » read more

System Bits: May 10
By Ann Mutschler - 10 May, 2016 - Comments: 0

Topological insulators In a finding that could open up a new pathway to advanced electronic devices and even robust quantum computer architecture, researchers from MIT; Oak Ridge, and Argonne National Laboratories; the Institute for Theoretical Physics in Bochum, Germany; the Institute for Theoretical Solid State Physics in Dresden; the Ecole Normale Superieure in Paris; and the Institute of N... » read more

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