Annalen der Physik

Cover image for Annalen der Physik

April 2008

Volume 17, Issue 4

Pages 193–266

  1. Contents

    1. Top of page
    2. Contents
    3. Original Papers
    1. Contents: Ann. Phys. 4/2008 (pages 193–194)

      Article first published online: 20 MAR 2008 | DOI: 10.1002/andp.200817005

  2. Original Papers

    1. Top of page
    2. Contents
    3. Original Papers
    1. Influence of light waves on the thermoelectric power under large magnetic field in III-V, ternary and quaternary materials (pages 195–220)

      K.P. Ghatak, S. Bhattacharya, S. Pahari, D. De, S. Ghosh and M. Mitra

      Article first published online: 18 FEB 2008 | DOI: 10.1002/andp.200710287

      Thumbnail image of graphical abstract

      We study theoretically the influence of light waves on the thermoelectric power under large magnetic field (TPM) for III-V, ternary and quaternary materials, whose unperturbed energy-band structures, are defined by the three-band model of Kane. The solution of the Boltzmann transport equation on the basis of this newly formulated electron dispersion law will introduce new physical ideas and experimental findings in the presence of external photoexcitation.

    2. Rigorous solution of a Hubbard model extended by nearest-neighbour Coulomb and exchange interaction on a triangle and tetrahedron (pages 221–259)

      R. Schumann

      Article first published online: 7 FEB 2008 | DOI: 10.1002/andp.200710281

      Thumbnail image of graphical abstract

      The Hubbard model extended by both nearest-neighbour (nn) Coulomb correlation and nearest-neighbour Heisenberg exchange is solved rigorously for a triangle and tetrahedron. All eigenvalues and eigenvectors are given as functions of the model parameters in a closed analytical form. For fixed electron numbers we found a multitude of level crossings, both in the ground state and in the excited states in dependence on the various model parameters. By coupling an ensemble of clusters to an electron bath we get the cluster gas model or the cluster gas approximation, if an extended array of weak-interacting clusters is considered.

      Corrected by:

      Erratum: Rigorous solution of a Hubbard model extended by nearest-neighbour Coulomb and isotropic exchange interaction on a triangle and tetrahedron

      Vol. 18, Issue 4, 281–282, Article first published online: 15 APR 2009

    3. A novel approach to Ising problems (pages 260–266)

      C. Hoede and H.J.W. Zandvliet

      Article first published online: 7 FEB 2008 | DOI: 10.1002/andp.200710282

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