Surface plasmons (SPs) are electromagnetic surface waves that propagate at the interface
between a conductor and a dielectric. Due to their unique ability to concentrate light on two …

Spin angular momentum associated with circular polarization is a fundamental and
important aspect of photons both in classical and quantum optics. The interaction of this …

Negative refraction, an unnatural optical phenomenon in which the incident and the
refracted waves reside on the same side of the surface normal, has been demonstrated with …

Skyrmions with topologically stable configuration have shown a promising route toward high-
density magnetic and photonic information processing due to their defect-immune and low …

Spin–momentum locking, a manifestation of topological properties that governs the behavior
of surface states, was studied intensively in condensed-matter physics and optics, resulting …

Despite a long history of studies, acoustic waves are generally regarded as spinless scalar
waves, until recent research revealed their rich structures. Here, we report the experimental …

The unidirectional excitation of near-field optical modes is a fundamental prerequisite for
many photonic applications, such as wireless power transfer and information …

Spin angular momentum enables fundamental insights for topological matters, and practical
implications for information devices. Exploiting the spin of carriers and waves is critical to …

Originally a pure mathematical concept, topology has been vigorously developed in various
physical systems in recent years, and underlies many interesting phenomena such as the …

van der Waals heterostructures of atomically thin layers with rotational misalignments, such
as twisted bilayer graphene, feature interesting structural moiré superlattices. Because of the …