Topological insulators (TIs) hold promise as a platform for unique quantum phenomena.
However, realizing these phenomena experimentally requires sophisticated devices. In this …

Abstract Three-dimensional (3D) topological insulators are a new state of quantum matter,
which exhibits both a bulk band structure with an insulating energy gap as well as metallic …

Topological insulators are a novel class of quantum matter with a gapped insulating bulk, yet
gapless spin-helical Dirac fermion conducting surface states. Here, we report local and non …

Modulating light via coherent charge oscillations in solids is the subject of intense research
topics in opto-plasmonics. Although a variety of methods are proposed to increase such …

The search of novel topological states, such as the quantum anomalous Hall insulator and
chiral Majorana fermions, has motivated different schemes to introduce magnetism into …

Here we present an overview of some of our recent experimental investigation on the high
conducting topologically protected surface state properties of a 3D topological insulator (TI) …

When a charge current is injected into the surface state of a topological insulator (TI), the
resulting shift of the spin-momentum-locked Fermi surface leads to the appearance of a net …

A topological pn junction (TPNJ) is an important concept to control spin and charge transport
on a surface of three-dimensional topological insulators (3D-TIs). Here we report successful …

Three dimensional (3D) topological insulators (TIs) are an important class of materials with
applications in electronics, spintronics and quantum computing. With the recent …

The paired top and bottom Dirac surface states, each associated with a half-integer quantum
Hall (QH) effect, and a resultant integer QH conductance (ν e 2/h), are hallmarks of a three …