Correlations and spin-orbit coupling: Spin waves without magnetism
Saurabh Maiti
Department of Physics
Concordia University
Abstract: Collective modes are dynamical excitations of the system. They are ubiquitous, sometimes unwanted and sometimes extremely useful. In this talk, I will demonstrate the novel collective-behavior in 2D systems with parity breaking spin-orbit coupling; with potential application to emerging technologies like spintronics/magnonics. These special modes, which we call the chiral-spin waves, exist without any time-reversal symmetry breaking in the system (no magnetism or externally applied field). I will discuss the properties of these modes, their propagation, their origin, their damping, and how to tune their properties with external knobs like a magnetic field. We will also see a couple of experiments that support this idea.
To find out more about Prof. Maiti research, you can consult his web page.
Cette conférence est présentée par le RQMP Versant Nord du Département de physique de l'Université de Montréal et de Génie physique de la Polytechnique.
