A grad student from the University of Michigan published the video below, giving a nice introduction to spintronics and his own research that uses ultrafast laser pulses to measure spin lifetime and understand how electron spins behave in solid materials.
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Spintronics is the new science of computers and memory chips that are based on electron spin rather than (or in addition to) the charge (used in electronics). Spintronics is an exciting field that holds promise to build faster and more efficient computers and other devices.
This book aims to explain various issues of spin transport in graphene in detail, from both basic and technical points of view, and gives us a theoretical background for understanding spintronics behaviors in graphene.
The authors say that the book gives hints to overcome the the difficulties in graphene applications in the field of spintronics by comparing the physical properties of graphene and magnetoresistive (MR) phenomena in spintronics.
Researchers from the Energy Department’s National Renewable Energy Laboratory (NREL), quite accidentally, discovered that perovskite materials, grown using solution processing, exhibit the optical Stark effect at room temperatures.
The NREL team used the Stark effect to remove the degeneracy of the excitonic spin states within the perovskite sample. The optical Stark effect can be used to create promising technologies, including the potential to be used as an ultrafast optical switch. In addition, it can be used to control or address individual spin states, which is needed for spin-based quantum computing.
Researchers from Colorado State University demonstrated a new approach to store information using electron spin. Using a thin film of barium ferrite (a magnetic insulator), the researchers managed to switch magnetic moments. This is the first time an insulator was used for such an application.
This could be a major spintronics breakthrough, as an insulator material may enable simpler and more efficient storage medium. In an insulator, perpendicular magnetic anisotropy (PMA) originates from the intrinsic magneto-crystalline anisotropy of the insulator, rather than interfacial anisotropy in a metal.
The University of Minnesota (UMN) published yet another video, interviewing several researchers at the Center for Spintronic Materials, Interfaces, and Novel Architectures (C-SPIN). The topic this time is topological insulators - priming new class of materials.
Topological insulators are materials in which the edges are conductive but the rest of the material acts like an insulator).
Researchers from Cambridge University developed a semiconductor assembly that acts as a field-effect light switch. Such a device could bridge the gap between optics and electronics - and lead the way towards optical spintronics.
The researchers were able to "spin-encode" light so it can carry data. Light has several advantages over electrical signals at the nanoscale - and can lead to devices which are more efficient, have a larger bandwidth and are more secure. This liquid-light switch could act sort of like a nanophotonic torque converter, translating information from the electrical regime into optical signals.