X iv : c on d - m at / 9 30 60 22 v 1 8 J un 1 99 3 Slater Decomposition of Laughlin States ∗ Gerald

ar X iv : c on d - m at / 9 80 60 22 v 1 2 J un 1 99 8 Lattice Dimerization in the Spin - Peierls Compound CuGeO 3

The uniaxial pressure dependences of the exchange coupling and the structural distortion in the dimerized phase of CuGeO3 are analyzed. A minimum magnetic dimerization of 3 % is obtained, incompatible with an adiabatic approach to the spin–Peierls transition. Exploring the properties of an Heisenberg spin chain with dynamical spin-phonon coupling, the dimerization dependence of the spin excitat...

ar X iv : c on d - m at / 9 80 60 82 v 1 [ co nd - m at . m tr l - sc i ] 5 J un 1 99 8 Magnetic Particles

ar X iv : c on d - m at / 9 80 60 43 v 1 3 J un 1 99 8 Electrodymanics with Toroid Polarization

A modified system of equations of electrodynamics has been obtained. Beside the Lagrangian one an alternative gauge-like formalism has been developed to introduce the toroid moment contributions in the equations obtained. The two potential formalism that was worked out by us earlier has been developed further where along with the two vector potentials we introduce two scalar potentials thus tak...

ar X iv : c on d - m at / 9 60 62 14 v 1 2 8 Ju n 19 96 On the anyon description of the Laughlin hole states Oslo SHS - 96 - 6 June 1996

We examine the anyon representation of the Laughlin quasi-holes, in particular the onedimensional, algebraic aspects of the representation. For the cases of one and two quasiholes an explicit mapping to anyon systems is given, and the connection between the holestates and coherent states of the fundamental algebras of observables is examined. The quasi-electron case is discussed more briefly, a...

ar X iv : c on d - m at / 9 60 30 39 v 1 6 M ar 1 99 6 Theory for Spin - Polarized Oscillations in Nonlinear Magneto - Optics due to Quantum Well States

Using an electronic tight-binding theory we calculate the nonlinear magneto-optical response from an x-Cu/1Fe/Cu(001) film as a function of frequency and Cu overlayer thickness (x=3. . .25). We find very strong spinpolarized quantum well oscillations in the nonlinear magneto-optical Kerr effect (NOLIMOKE). These are enhanced by the large density of Fe d states close to the Fermi level acting as...