Quant-ph 20181219 Beyond Baby Skyrmion: Principle Chiral Model in noncollinear magnets

by Dr Zhentao Wang

Wednesday 19 Dec 2018, 10:00 → 11:00 Asia/Shanghai

Meeting Room 410,TDLI（Tsung-Dao Lee Library）

Abstract

We discuss noncollinear magnetic phenomena whose local order parameter is characterized by more than one spin vector. By focusing on the simple cases of 2D triangular and 3D pyrochlore lattices, we demonstrate that their low-energy theories can be described by a one-parametric class of sigma models continuously interpolating between the classical Heisenberg model and the principal chiral model. A natural consequence of our derivation is that stable 3D Skyrmion can be generically induced in noncollinear magnets.

Biography

EDUCATION
Doctor of Philosophy, Rice University Sep 2010 - May 2016
Bachelor of Science, University of Science and Technology of China Sep 2006 - Jul 2010
RESEARCH POSITIONS
Post-Doctoral Research Associate, The University of Tennessee Jul 2016 - Present
CNLS Summer Student, Los Alamos National Laboratory May 2015 - Aug 2015
CNLS Summer Student, Los Alamos National Laboratory Aug 2014 - Oct 2014
PHD Student, Rice University Sep 2010 - May 2016
RESEARCH INTERESTS
Theoretical condensed matter physics, Strongly correlated electron systems, Frustrated magnetism

Division

Condensed Matter