Research Interests

The primary focus of our research is the exploration and understanding of a wide range of non-trivial phenomena triggered by spin currents, magnons, and spin textures, etc. Instead of adhering to prevailing trends, we prioritize conducting experimental work that is both challenging and valuable from the perspectives of fundamental physics and practical application. Our work typically involves electrical or optical measurements at microwave frequencies with local or nonlocal geometries. Below are some examples of our ongoing research.  

In condensed matter physics, the chirality of elementary particles and quasiparticles plays an important role in many unconventional phenomena. In magnetic materials, magnons are chiral quasiparticles while the chirality of magnons has received limited attention due to the fact that ferromagnets only support right-handed chirality. Recent studies have shown that two-sublattice magnetic systems, such as ferrimagnets and antiferromagnets, can support both right- and left-handed chiralities. In particular, our prior work has demonstrated the switching and electrical reading of magnon chiralities. Given that magnon chirality is an intrinsic degree of freedom, the implementation of data transmission, processing, and computing by harnessing chiral magnons as an information carrier would constitute a revolutionary advancement.

Damping is of great importance in determining the operational rate and efficiency of spintronic devices. In recent decades, several theoretical models have been proposed to explore the damping mechanism, including the breathing Fermi-surface model, the torque correlation model, and the scattering model. However, the damping mechanism has not yet been fully understood. For instance, we discovered a new phenomenon in an artificial ferrimagnet: the counter-dissipation phenomenon. Furthermore, one new damping mechanism, designated as inter-magnet pumping, has been revealed in our experiment. Given its central role in spintronics and magnonics, it is essential to dedicate greater efforts to investigating the damping mechanism and dynamics.

Topological spin textures carry nonzero topological charge in real space, giving rise to a number of intriguing phenomena. To date, different sorts of topological spin textures, such as skyrmions and merons, have been observed by various experimental techniques. Their topological invariant spin textures can be conceptualized as magnetic quasiparticles in a two-dimensional Heisenberg spin lattice. Studying the interaction and hybridization between these magnetic quasiparticles through emergent fields would be challenging and fascinating.