This article reviews the static and dynamic properties of spontaneous superstructures
formed by electrons. Representations of such electronic crystals are charge density waves …

Studies of the electromagnetic response of various classes of correlated electron materials
including transition-metal oxides, organic and molecular conductors, intermetallic …

During the last decade, interest on the growth and self-assembly of organic molecular
species on solid surfaces spread over the scientific community, largely motivated by the …

We review ground states and excitations of a quantum antiferromagnet on triangular and
other frustrated lattices. We pay special attention to the combined effects of magnetic field h …

We show a zero-gap semiconducting (ZGS) state in the quasi-two-dimensional organic
conductor α-(BEDT-TTF) 2 I 3 salt, which emerges under uniaxial pressure along the a-axis …

Spin current–a flow of electron spins without a charge current–is an ideal information carrier
free from Joule heating for electronic devices. The celebrated spin Hall effect, which arises …

The transport phenomena of zero-gap conductors are one of the central subjects in
condensed matter physics. α-(BEDT-TTF) 2I3 [BEDT-TTF= bis (ethylenedithio) …

The Coulomb interaction among massless Dirac fermions in graphene is unscreened
around the isotropic Dirac points, causing a logarithmic velocity renormalization and a cone …

The energy-level alignment at interfaces between three electroactive conjugated organic
materials and Au was systematically varied by adjusting the precoverage of the metal …

Since the discovery of the first organic superconductors (TMTSF) 2X (TMTSF)
tetramethyltetraselenafulvalene (see Figure 1); X) PF6, ClO4,...) about a quarter century ago …