Quantum Matters Seminar: Adam Wei Tsen

Tunneling Probe of 2D Kitaev and Moiré Magnetism

Adam Wei Tsen
University of Waterloo

Wednesday, January 18, 2023
11:00 a.m.

In-person: QNC 1201

Abstract: I will discuss our recent results using tunneling magnetoresistance and spectroscopy to probe the underlying magnetic order and/or excitations in two “complex” atomically thin spin systems: the Kitaev material alpha-RuCl₃ in monolayer form and twisted bilayers of the layer antiferromagnet CrI₃. We find a reversal of the magnetic anisotropy together with an enhancement of the Kitaev interaction in the former and multiple skyrmion states in the latter that can be tuned by magnetic field.