Date/Time: 23 January 2017, Physics Colloquium Monday@3.30PM
Speaker: Prof. Del Atkinson, Durham University
Title: Physics at the Interface: Dimensionality and proximity
effects in ferromagnetic/non-magnetic spintronics
Venue: NISER, Jatni, SPS Conference Room
Abstract:
Magnetism and magnetic phenomena in bulk ferromagnetic materials are generally
well understood in physical terms. In contrast, in nanoscale thin-films and
multilayered ferromagnetic/non-magnetic systems a range of exciting, non-trivial
and potentially useful physics has emerged that is associated with the
interfacing between ferromagnetic and non-magnetic materials. This is exemplified
by giant magnetoresistance (GMR), for which the work of Albert Fert and Peter
Grunberg in the late 1980s won the Nobel prize in 2007 and founded the burgeoning
field of spintronics.
In the decades since the discovery of GMR, a range of interfacial physics has
emerged in ferromagnetic/non-magnetic systems that opens up new avenues for physical
understanding and offers potential for the creation of synthetic materials with
designer properties for spintronic applications in current and future technology
including data storage, logic and biomedical applications. Over the past
decade several aspects of the fundamental spintronics physics, such as current-driven,
rather than magnetic field driven, magnetization switching have been understood
and applications developed.
However, there are many exciting areas of on-going research linked to interfacial
effects such as interface spin-orbit interactions (SOI), spin-currents from the spin
Hall effect (SHE), spin-orbit torques (SOT) and SOT switching, interfacial
Dzyaloshinskii-Moriya (DMI) interaction, proximity magnetization of non-magnetic
metals and effects such as anisotropic magnetoresistance (AMR) and ferromagnetic
damping where interfacial effects with non-magnetic layers can yield new insights.
These topics are being researched internationally and form some of the research
activities in the Nanomagnetism and Spintronics research group at Durham University.
This talk will introduce some of these exciting physical phenomena, and discuss
research progress with examples from our research work in the group at Durham University.
Негізгі бет Dr Del Atkinson, SPS Physics Colloquium at NISER
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