A wide range of materials, like d-wave superconductors, graphene, and topological
insulators, share a fundamental similarity: their low-energy fermionic excitations behave as …

Quantum systems in confined geometries are host to novel physical phenomena. Examples
include quantum Hall systems in semiconductors and Dirac electrons in graphene. Interest …

We investigate the quantum anomalous Hall effect (QAHE) and related chiral transport in the
millimeter-size (Cr 0.12 Bi 0.26 Sb 0.62) 2 Te 3 films. With high sample quality and robust …

A bulk material comprising stacked nanosheets of nickel bis (dithiolene) complexes is
investigated. The average oxidation number is− 3/4 for each complex unit in the as-prepared …

Three-dimensional Bi-chalcogenide topological insulators exhibit surface states populated
by massless Dirac fermions that are topologically protected from disorder scattering. Here …

Strong spin–orbit interaction and time-reversal symmetry in topological insulators enable the
spin-momentum locking for the helical surface states. To date, however, there has been little …

Superconductivity involving topological Dirac electrons has recently been proposed as a
platform between concepts in high-energy and condensed-matter physics. It has been …

A superlattice made of a topological insulator (Sb2Te3) and a normal insulator (ferroelectric
GeTe), also called an interfacial phase‐change material, are switched between the Dirac …

Surface plasmons in graphene may provide an attractive alternative to noble-metal
plasmons due to their tighter confinement, peculiar dispersion, and longer propagation …

Understanding the spin-texture behaviour of boundary modes in ultrathin topological
insulator films is critically essential for the design and fabrication of functional nanodevices …