Topological order in molten antiferromagnets
Seminar
QUEST Center event
No
Speaker
Daniel Podolsky, Technion
Date
28/12/2023 - 13:30 - 12:30Add to Calendar
2023-12-28 12:30:00
2023-12-28 13:30:00
Topological order in molten antiferromagnets
In this talk, I will discuss the role of antiferromagnetic interactions in two-dimensional crystal melting. I will show that, for strong enough magnetic interactions, fundamental lattice dislocations become prohibitive due to magnetic frustration. This gives rise to new types of hexatic and tetratic phases that are topologically ordered, in the sense of containing bound fundamental dislocations and free dislocation pairs. I will derive these phases through a field-theoretic tretment, and will demonstrate them numerically in an experimentally realizable system of hard spheres confined between parallel plates. I will discuss the possible survival of antiferromagnetic order in molten crystals.
Conference room on the 0th floor of Resnick building
Department of Physics
physics.dept@mail.biu.ac.il
Asia/Jerusalem
public
Place
Conference room on the 0th floor of Resnick building
Abstract
In this talk, I will discuss the role of antiferromagnetic interactions in two-dimensional crystal melting. I will show that, for strong enough magnetic interactions, fundamental lattice dislocations become prohibitive due to magnetic frustration. This gives rise to new types of hexatic and tetratic phases that are topologically ordered, in the sense of containing bound fundamental dislocations and free dislocation pairs. I will derive these phases through a field-theoretic tretment, and will demonstrate them numerically in an experimentally realizable system of hard spheres confined between parallel plates. I will discuss the possible survival of antiferromagnetic order in molten crystals.
Last Updated Date : 22/12/2023
