BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Quantitative modelling of magnetic materials at the atomic scale -
  Dr Joseph Barker\, University of Leeds
DTSTART:20221010T133000Z
DTEND:20221010T140000Z
UID:TALK182897@talks.cam.ac.uk
CONTACT:Dr Christoph Schran
DESCRIPTION:Atomistic spin dynamics (ASD) is a classical formalism similar
  to molecular dynamics but for the magnetic moments of a material. It play
 s an important role in understanding experiments in the field of spintroni
 cs as many nanoscale and even macroscopic magnetic quantities are difficul
 t to measure. It has long been known that ASD does not reproduce the expec
 ted thermodynamics at low temperatures—where low temperature can even me
 an room temperature! This is due to the classical approximations inherent 
 in the method. Recently we implemented a quantum thermostat which ensures 
 the thermally excited magnons obey quantum statistics\, while the magnetic
  moments themselves remain classical [1]. We have shown that this allows q
 uantitative calculation of thermodynamic properties across a wide temperat
 ure range. I will demonstrate that through parameterisation from state of 
 the art first principles calculations\, multiscale models can be construct
 ed which agree very well with experiments [2].\n\n\n[1] J. Barker & G.E.W.
  Bauer\, Phys. Rev. B 100\, 140401 (2019)\n\n[2] J. Barker\, D. Pashov & J
 . Jackson\, Elect. Struct. 2\, 044002 (2020)
LOCATION:Venue to be confirmed
END:VEVENT
END:VCALENDAR