Uncovering the Anomalous Hall Effect and its Relation to Berry Curvature
Do you ever wonder how magnets work? Scientists have long been seeking to understand a phenomenon known as the Anomalous Hall Effect (AHE). AHE is the magnetic response of a material when an electric current is applied in the presence of a magnetic field. Recently, a team of researchers have discovered a new concept related to AHE, known as Berry curvature. This new concept could help in the development of more efficient and powerful magnets.
Berry curvature is a type of geometric object that describes the motion of a particle in a curved space. The researchers used a combination of experiments and theoretical calculations to study the Berry curvature in a material known as a ferromagnet. Their results showed that the Berry curvature affects the AHE. In other words, the Berry curvature can be used to control the strength of the magnetic response. This could lead to the development of more efficient and powerful magnets in the future.
source: Phys.org