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SUMMARY:Multiscale modelling of complex magnetic materials - Manuel dos Sa
 ntos Dias\, STFC UKRI
DTSTART:20250616T133000Z
DTEND:20250616T140000Z
UID:TALK232981@talks.cam.ac.uk
CONTACT:Dr Sun-Woo Kim
DESCRIPTION:Magnetic materials are an unending source of fascinating physi
 cal behaviour which have fundamental appeal but also important technologic
 al applications.\nIn order to understand\, quantify and predict the proper
 ties of magnetic materials\, we need information about the magnetic exchan
 ge interactions\, which control how the different magnetic atoms interact 
 with each other and respond to external stimuli.\nIn this talk\, I will gi
 ve an overview on first-principles approaches to the calculation of magnet
 ic exchange interactions using density functional theory (DFT). First I wi
 ll outline how the properties of magnetic materials can be computed with a
 nd what capabilities are offered by different DFT codes. Next I will discu
 ss how to map DFT calculations to spin models and when such a mapping is e
 xpected to work\, followed by a discussion of the two main approaches to c
 ompute magnetic exchange interactions. Lastly\, I will explain how to obta
 in simple information from the computed magnetic exchange interactions\, s
 uch as the magnetic ground state and the spin wave spectrum\, and how to c
 onnect to atomistic spin dynamics\, Monte Carlo and micromagnetic simulati
 ons.\n
LOCATION:Zoom: https://zoom.us/j/92447982065?pwd=RkhaYkM5VTZPZ3pYSHptUXlRS
 kppQT09
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