This review shows the highlights of a 4-year-long research project supported by the
Japanese Government to explore new superconducting materials and relevant functional …

Point-contact spectroscopy was originally developed for the determination of the electron–
phonon spectral function in normal metals. However, in the past 20 years it has become an …

We have investigated the effects of do** on a single layer of graphene using angle-
resolved photoemission spectroscopy. We show that many-body interactions severely warp …

New carbon-based superconductors are synthesized by intercalating metal atoms into the
solid-phase hydrocarbons picene and coronene. The highest reported superconducting …

Organic superconductors have π-molecular orbitals, from which electrons can become
delocalized, giving rise to metallic conductivity due to orbital overlap between adjacent …

A serial triple quantum dot (TQD) electrostatically defined in a Ga As∕ Al Ga As
heterostructure is characterized by using a nearby quantum point contact as charge …

We develop a first-principles scheme to calculate adiabatic and nonadiabatic phonon
frequencies in the full Brillouin zone. The method relies on the stationary properties of a …

Predicting the critical temperature T c of new superconductors is a notoriously difficult task,
even for electron-phonon paired superconductors, for which the theory is relatively well …

We measured the temperature dependent resistivity, ϱ (T), of the intercalated graphite
superconductor CaC 6 as a function of pressure up to 16 GPa. We found a large linear …

We report first-principles calculations of the superconducting properties of CaC 6, obtained
within the density functional theory of superconductivity. We find a moderately anisotropic …