Andrea Perucchi

TL;DR: By exciting metallic K3C60 with mid-infrared optical pulses, a large increase in carrier mobility is induced, accompanied by the opening of a gap in the optical conductivity, which is observed at equilibrium when cooling metallic K 3C60 below Tc (20 kelvin).

TL;DR: In this article, coherent optical excitation of molecular vibrations in the organic conductor K3C60 can induce a non-equilibrium state with the optical properties of a superconductor, and a transient gap in the real part of the optical conductivity and a low-frequency divergence of the imaginary part are measured for base temperatures far above equilibrium Tc=20 K.

TL;DR: Differently from P=0, where the VO2 metallic phase is found only in conjunction with the rutile structure above 340 K, a new RT metallic phase within a monoclinic structure appears accessible in the high pressure regime.

TL;DR: Raman and infrared transmission and reflectivity measurements were carried out at room temperature and high pressure (0--15 GPa) on vanadium dioxide compounds in this paper, where the authors investigated the effects of different extents of structural distortions (Peierls distortion) on the lattice dynamics and the electronic properties of this family of compounds.

TL;DR: It is demonstrated that in Bi2Se3 topological insulator, an electromagnetic-induced transparency is achieved under the application of a strong terahertz electric field, and this effect is exclusively related to the presence of Dirac electron at the surface of Bi2 Se3, and opens the road towards tunable terAhertz nonlinear optical devices based on topologicalInsulator materials.