BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Decomposition of Response Tensors Using Point Group Representation
 s  - Turan Birol\, Department of Chemical Engineering and Materials Scienc
 e\, University of Minnesota\, USA
DTSTART:20240610T130000Z
DTEND:20240610T133000Z
UID:TALK217528@talks.cam.ac.uk
CONTACT:Dr Sun-Woo Kim
DESCRIPTION:Emergent structural and electronic orders in crystals give ris
 e to anisotropic response properties that can be used as probes of these o
 rder parameters and resultant phases. Both linear and nonlinear response p
 roperties\, including elastic\, optical\, and transport properties\, can b
 e represented using tensors\, and first principles calculations are often 
 use to calculate many tensorial properties. In this talk\, after reviewing
  well established group theory approaches\, we will show that the response
  tensors of arbitrary rank can be decomposed into different representation
 s of the point group\, which in turn correspond to different order paramet
 ers. By considering the ferroaxial (or ferrorotational) phase transitions 
 as an example\, we will show that the emergence of an axial vector in a cu
 bic solid corresponds to new components of piezoconductivity and elastores
 istivity tensors to become nonzero. We will support this predictions with 
 density functional theory results on a novel ferroaxial material CaSnF6 di
 scovered through a symmetry-guided materials database search\, and conclud
 e by discussing how symmetry-informed approached can make electronic struc
 ture calculations. \n\nReference: https://arxiv.org/abs/2405.02149 
LOCATION:Zoom link: https://zoom.us/j/92447982065?pwd=RkhaYkM5VTZPZ3pYSHpt
 UXlRSkppQT09
END:VEVENT
END:VCALENDAR