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Location
SHL215
Speaker
Adam L. Friedman, PhD Laboratory for Physical Sciences, College Park
Host
Nikolic
The anticipated death of Moore’s law, which describes the exponential growth of processor capabilities, has resulted in a frantic search for new materials and new types of devices that can replace or (more likely) complement silicon MOSFETs as the primary components in device technologies. New spintronic (spin-based) devices fabricated from 2D van der Waals materials and their heterostructures promise lower-power, higher-performance devices and an avenue beyond Moore’s law.
Location
SHL215
Speaker
Dr. Satoru Emori, Virginia Tech
Host
Jungfleisch
Minimizing magnetic damping is crucial for engineering spintronic devices (e.g., nanoscale magnetic memories and signal generators) that can be operated with low power input. However, the mechanisms of damping in various materials – even in the simplest ferromagnetic metals – have yet to be understood. In this talk, I will present our recent experiment that provides fundamental insight into magnetic damping in a simple model system: epitaxial thin films of pure Fe.
Location
SHL215
Speaker
Dr. Igor Barsukov, University of California
Host
Jungfleisch

Injection of a pure spins current into a magnetic insulator modifies the chemical potential of magnons and can lead to intriguing phenomena such as long-range spin transport and magnon condensation. We study nanowires fabricated from a bilayer of a metallic ferromagnet and an insulating ferrimagnet. Via interlayer exchange coupling, magnons can be thermally transferred from one layer into another, constituting a pure spin current. The injection generates a non-equilibrium population of incoherent magnons.

Location
SHL215
Speaker
Vesna F Mitrovic
Host
Nikolic
Study of the combined effects of strong electronic correlations with spin-orbit coupling (SOC) represents a central issue in quantum materials research. Predicting emergent properties represents a huge theoretical problem since the presence of SOC implies that the spin is not a good quantum number. Existing theories propose the emergence of a multitude of exotic quantum phases, distinguishable by either local point symmetry breaking or local spin expectation values, even in materials with simple cubic crystal structure such as Ba2NaOsO6.