The Chern number, an invariant quantity that characterizes topological phases in physical systems, was recently tuned in a controlled fashion by researchers from Tokyo Tech. They achieved this feat in ...

The Quantum Hall effect (QHE) is one of the most important discoveries in physical sciences. Due to the one-dimensional (1-D) dissipationless edge states, QHE exhibits exotic transport properties with ...

In topological materials, electrons can display behavior that is fundamentally different from that in 'conventional' matter, and the magnitude of many such 'exotic' phenomena is directly proportional ...

Quantum Hall effect (QHE) plays an important role in materials science and precision measurement. Due to the dissipationless edge states, QHE exhibits exotic transport properties with quantized Hall ...

A two-dimensional photonic crystal has multiple topologically protected channels, which can be used to transmit and reroute light without scattering losses. Figure 1: A schematic of the ...

Topology, a branch of mathematics classifying geometric objects, has been exploited by physicists to predict and describe unusual quantum phases: the topological states of matter. These intriguing ...

Theorists propose a recipe for directly measuring the topological order in non-interacting cold atom systems. The quantized Hall conductance of a two-dimensional semiconductor in a high magnetic field ...

Quantum Hall effect (QHE) is one of the most important discoveries in physical sciences. Due to the one-dimensional (1D) dissipationless edge states, QHE exhibits exotic transport properties with ...