Spin–orbit coupling induces a unique form of Zeeman interaction in momentum space in
materials that lack inversion symmetry: the electron's spin is locked on an effective magnetic …

Topological insulators (TIs) provide intriguing prospects for the future of spintronics due to
their large spin–orbit coupling and dissipationless, counter‐propagating conduction …

Whereas ferromagnets have been known and used for millennia, antiferromagnets were
only discovered in the 1930s. At large scale, because of the absence of global …

The Berry curvature and quantum metric are the imaginary part and real part, respectively, of
the quantum geometric tensor, which characterizes the topology of quantum states. The …

Quantum geometry in condensed-matter physics has two components: the real part quantum
metric and the imaginary part Berry curvature. Whereas the effects of Berry curvature have …

We study the surface crystalline and electronic structures of the antiferromagnetic
topological insulator MnBi2Te4 using scanning tunneling microscopy/spectroscopy (STM/S) …

Using circularly polarized light to control quantum matter is a highly intriguing topic in
physics, chemistry and biology. Previous studies have demonstrated helicity-dependent …

Recently discovered intrinsic antiferromagnetic topological insulator Mn Bi 2 Te 4 presents
an exciting platform for realization of the quantum anomalous Hall effect and a number of …

Ferromagnetic topological insulators exhibit the quantum anomalous Hall effect, which is
potentially useful for high‐precision metrology, edge channel spintronics, and topological …

Materials in which quantum mechanical effects lead to novel properties on the macroscopic
scale are of interest both fundamentally and for applications. For such quantum materials …