Symmetry tuning topological states of the axion insulator candidate EuIn 2 As 2 by its noncollinear magnetic order
Researchers tuned EuIn2As2, an axion insulator candidate, by applying an in-plane magnetic field to change its noncollinear magnetic symmetry. This tuning revealed how altering the magnetic symmetry controls topologically protected surface states and hinge states. The study shows a mechanism for creating topological electric switches by manipulating domain walls.