We calculate the electronic polarizability in the superconducting state near extremum vectors ~ Q0 of the Fermi surface. A pole appears in the polarizability at frequencies ω near the superconducting gap 2∆ which leads to a sharp peak at ω just below 2∆ in the lattice vibrations near ~ Q0. A second order transition to a charge density wave state below the superconducting transition is shown to ...

It is shown that the scalar mesons σ , f0(980) and a0(980) as t-channel exchanges quantitatively solve the problem of diamagnetism and give an explanation of the large missing part of the electric polarizability α showing up when only the pion cloud is taken into account. The electric polarizability of the proton αp confirms a two-photon width of the σ meson of Γσγγ = (2.58±0.26) keV.

A comprehensive analysis of adsorption strength, average molecular orientation, and absolute molecular direction for p-nitrophenol at solid-air, solid-liquid, and liquid-air interfaces is obtained from the nearresonant optical second harmonic generation (SHG) from the interface. Perturbation theory calculations of the molecular nonlinear polarizability tensor elements using *-electron wave func...

In this paper we report the structure of the Li4Ge4 cluster as a function of charge transfer and polarizability. We find that for small charge transfer (Q < 0.5) this cluster has the expected cubic structure: a Ge4 tetrahedron with a Li ion attached at large distance to each face. With increasing charge transfer Q > 0.5 the structure of Li4Ge4 changes: for relative small polarizability of the G...

Static and frequency-dependent electronic (hyper)polarizabilities of the dimethylnaphthalene (DMN) isomers were computed in vacuum using the Coulomb-attenuating Density Functional Theory method. The nonlinear optical Second Harmonic Generation (SHG) and Electro-Optical Pockels Effect (EOPE) were investigated at the characteristic Nd:YAG laser wavelength of 1064 nm. The response electric propert...

The effects of temperature variation on the electric polarizability of mesoscopic metallic nanoparticles is studied via a theoretical model in which the temperature dependence of the electron–phonon and electron–electron scattering rates are taken into account. Furthermore, the nonlocal response of the metal, which is significant for particles of mesoscopic dimensions, is also included. It is f...

The dielectric response of a quasi-one-dimensional electron system is studied by including fluctuation effects (in the polarizability) and by using a recently derived analytic form for the electron-electron interactions. General forms for the polarizability matrices both for the intraand inter-subband cases are presented. The generalized polarizability is analytic over the whole region of the w...

Citation Vydrov, Oleg A. and Troy Van Voorhis. "Dispersion interactions from a local polarizability model. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. A local ...

The authors have performed molecular dynamics simulations of polarizable solutes in water to investigate how solute polarizability affects solute-solute hydrophophic interactions. A degree of polarization similar to the one expected in biomolecules, corresponding to a dielectric response of epsilon=2-20, results in dramatic changes in the hydrophobic forces. They find that this degree of polari...