In this paper, we derive a general formula for the quantized fractional corner charge in two-
dimensional C n-symmetric higher-order topological insulators. We assume that the …

A remarkable breakthrough in topological phase classification is the establishment of the
topological periodic table, which is mainly based on the classifying space analysis or K …

Axion insulators are 3D magnetic topological insulators supporting hinge states and
quantized magnetoelectric effects, recently proposed for detecting dark-matter axionic …

Modern material science has been revolutionized by the discovery of novel topological
states of quantum matter, which sheds new lights on solving long-standing scientific …

Different from the chiral edge states, antichiral edge states propagating in the same direction
on the opposite edges are theoretically proposed based on the modified Haldane model …

The chiral hinge modes are the key feature of a second-order topological insulator in three
dimensions. Here we propose a quadrupole index in combination of a slab Chern number in …

A Weyl semimetal with strong electron-phonon interaction can show axionic coupling in its
insulator state at low temperatures, owing to the formation of a charge density wave (CDW) …

We report on the possibility of detecting hinge spin polarization in magnetic topological
insulators by resistance measurements. By implementing a three-dimensional model of …

We give a bulk-hinge correspondence for higher-order topological phases protected by
rotoinversion C 4 I symmetry in magnetic systems. Our approach allows us to show the …

We study equilibrium crystal shapes of a topological insulator (TI), a topological crystalline
insulator (TCI) protected by mirror symmetry, and a second-order topological insulator …