We studied the optical signature of bipolaron and its effects on bandgap modulation in single-layer Transition Metal Dichalcogenides (TMDs) under magnetic field. Using Huybrecht method, we derived ground state energies modified zero Landau levels for all Fröhlich coupling constants. take into account both intrinsic longitudinal phonon modes surface induced by polar substrate. observed that high...

Bismuth perovskites ABiO$_3$ (A = Sr, Ba) host a variety of peculiar phenomena including bond-disproportionated insulating phases and high-temperature superconductivity upon hole doping. While the mechanisms underlying these are still debated, off-diagonal electron-phonon ($e$-ph) coupling originating from modulation orbital overlaps has emerged as promising candidate. Here, we employ classical...

The massive Gross-Neveu model is solved in the large N limit at finite temperature and chemical potential. The scalar potential is given in terms of Jacobi elliptic functions. It contains three parameters which are determined by transcendental equations. Self-consistency of the scalar potential is proved. The phase diagram for non-zero bare quark mass is found to contain a kink-antikink crystal...

There is compelling evidence for a strong electron-phonon interaction (EPI) in cuprate superconductors from the isotope effects on the supercarrier mass, high resolution angle resolved photoemission spectroscopies (ARPES), a number of optical and neutron-scattering measurements in accordance with our prediction of high-temperature superconductivity in polaronic liquids. A number of observations...

We carry out a comprehensive theoretical and experimental study of charge injection in poly 3hexylthiophene P3HT to determine the most likely scenario for metal-insulator transition in this system. We calculate the optical-absorption frequencies corresponding to a polaron and a bipolaron lattice in P3HT. We also analyze the electronic excitations for three possible scenarios under which a first...

Polaron and bipolaron formation in the Holstein-Hubbard model with harmonic confinement potential, relevant to quantum dot structures, is investigated in one to three dimensions by means of unbiased quantum Monte Carlo simulations. The discrete nature of the lattice and quantum phonon effects are fully taken into account. The dependence on phonon frequency, Coulomb repulsion, confinement streng...

There is a growing understanding that transport properties of complex oxides and individual molecules are dominated by polaron physics. In superconducting oxides the long-range Fröhlich and short-range JahnTeller electron-phonon interactions bind carriers into real space pairs small bipolarons with surprisingly low mass but sufficient binding energy, while the long-range Coulomb repulsion keeps...