Topological acoustics is an emerging field that lies at the intersection of condensed matter
physics, mechanical structural design and acoustics engineering. It explores the design and …

A review is given on the foundations and applications of non-Hermitian classical and
quantum physics. First, key theorems and central concepts in non-Hermitian linear algebra …

Ferroelectric materials hold great promise in the field of photocatalytic water splitting due to
their spontaneous polarization that sets up an inherent internal field for the spatial …

Discovery of robust yet reversibly switchable electric dipoles at reduced dimensions is
critical to the advancement of nanoelectronics devices. Energy bands flat in momentum …

We report the observation of a peculiar polarization behavior of BaFe12O19 in electric field
where the linear polarization is detected at temperatures below 150 K whereas at higher …

Bi3TiNbO9, a layered ferroelectric photocatalyst, exhibits great potential for overall water
splitting through efficient intralayer separation of photogenerated carriers motivated by a …

The past decade has witnessed dramatic progress related to various aspects of emergent
topological polar textures in oxide nanostructures displaying vortices, skyrmions, merons …

Abstract Higher-order topological insulators,,,–are a family of recently predicted topological
phases of matter that obey an extended topological bulk–boundary correspondence …

In the presence of crystalline symmetries, certain topological insulators present a filling
anomaly: a mismatch between the number of electrons in an energy band and the number of …

Inorganic perovskite ferroelectrics are widely used in nonvolatile memory elements,
capacitors, and sensors because of their excellent ferroelectric and other properties. Organic …