The low energy spectrum of finite size metallic single-walled carbon nanotubes (SWNTs) is determined. Starting from a tight binding model for the p<Subscript>z</Subscript> electrons, we derive the low energy Hamiltonian containing all relevant scattering processes resulting from the Coulomb interaction, including the...</subscript>

By diagonalizing the 120×120 complete energy matrices for d<Superscript>3</Superscript> ion in trigonal crystal field, which contains the electrostatic interaction, the trigonal field as well as the spin-orbit interaction, the unified calculation of the whole optical and EPR spectra for ruby are made. And matrix elements...</superscript>

Theoretical analysis of the layered quasi-periodic Fibonacci structures (superlattices-sequence) is presented for the systems consisting of n<Subscript>A</Subscript> and n<Subscript>B</Subscript> ferromagnetically ordered planes within the layers with S<Subscript>a</Subscript> and S<Subscript>b</Subscript> spins, respectively, while the interfaces are coupled with bilinear and/or...</subscript></subscript></subscript></subscript>

The phenomenon of high-TC superconductivity has remained a field of puzzling complexity and widely divergent interpretations. Although the number of different materials exhibiting high-TC has increased substantially, and the massive research effort has led to considerably enhanced knowledge, the...

The magnetization of Fe(10Å)/V(tV) (10Å⩽tV⩽ 40Å) multilayers has been measured as a function of temperature. For Fe/V multilayers with fixed iron layer thickness of 10Å, the magnetization decreases faster with temperature as the vanadium layers are made thicker. A simple theoretical...

The magnetization of Fe/Pt multilayers has been measured as a function of temperature. A bulk-like T3/2 temperature dependence of the magnetization is observed for all multilayers in the temperature range 5–300K. The spin wave constant B is found to decrease inversely with tFe. A simple...