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SUMMARY:Artificial Magnetic Materials and Chiral Spin Textures (Prof. Robe
 rt L. Stamps\, University of Glasgow) - Prof. Robert L. Stamps\, School of
  Physics and Astronomy\, University of Glasgow
DTSTART:20140926T140000Z
DTEND:20140926T150000Z
UID:TALK51618@talks.cam.ac.uk
CONTACT:Dr. Jonathan D. Mar
DESCRIPTION:There is an elegant simplicity to the geometrical design of 
 ‘artificial spin ice’ metamaterials. This simplicity belies their grea
 t utility in the realisation and study of phenomena observed in particle s
 ystems far from equilibrium. From its very beginning\, the allure of studi
 es in artificial spin ice has been through the opportunities provided to a
 ddress topics of fundamental scientific interest within entirely new conte
 xts. The physics studied has included topics that range from field theory 
 to nonlinear dynamics\, and recent works have even opened a new door for s
 tudies of fundamental thermodynamics. These studies represent a first step
  along a path into an uncharted territory—a landscape of new advanced fu
 nctional materials in which topological effects on physical properties can
  be explored and harnessed. [1-2]\n\nIn this talk\, I will discuss pattern
 ed magnetic arrays from the point of view of their potential as advanced f
 unctional materials. Examples will be provided of how certain properties c
 an be designed\, such as macroscopic cross ties\, and of some of the surpr
 ising features that can emerge when the designs are tested in real materia
 ls. A central theme of the talk will be chirality in spin systems—its ma
 nifestation as skyrmionic and helicoidal textures\, the possibility of its
  emergence in artificially designed structures\, and potentials for its ap
 plication. [3-4]\n\n1. Heyderman\, L. J.\, and Stamps\, R. L.\, “Artific
 ial ferroic systems: novel functionality from structure\, interactions and
  dynamics”\, Journal of Physics: Condensed Matter\, 25 (36)\, 363201 (20
 13). 2. Cumings\, J.\, Heyderman\, L. J.\, Marrows\, C. H.\, and Stamps\, 
 R. L.\, “Focus on artificial frustrated systems”\, New Journal of Phys
 ics\, 16 (7)\, 075016 (2014). 3. Silva\, R. L.\, Secchin\, L. D. \, Moura-
 Melo\, W. A. \, Pereira\, A. R.\, and Stamps\, R. L.\, “Emergence of sky
 rmion lattices and bimerons in chiral magnetic thin films with nonmagnetic
  impurities”\, Physical Review B\, 89 (5)\, 054434 (2014). 4. Garcia-San
 chez\, F.\, Borys\, P.\, Vansteenkiste\, A.\, Kim\, J.-V.\, and Stamps\, R
 . L.\, “Nonreciprocal spin-wave channeling along textures driven by the 
 Dzyaloshinskii-Moriya interaction”\, Physical Review B\, 89 (22)\, 22440
 8 (2014).
LOCATION:Small Lecture Theatre\, Bragg Building\, Cavendish Laboratory (Ph
 ysics Department)
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