Перегляд за автором "Sherman, A."

Сортувати за: Порядок: Результатів:

  • Evolution of the spectrum of the Hubbard model with filling 
    Sherman, A. (Condensed Matter Physics, 2006)
    The diagram technique for the one-band Hubbard model is formulated for the case of moderate to strong Hubbard repulsion. The expansion in powers of the hopping constant is expressed in terms of site cumulants of electron ...
  • Localized hole states in La₂СиО₄₊δ 
    Rubin, P.; Sherman, A. (Физика низких температур, 1996)
    Bound hole states induced by excess oxygen in La₂СиО₄₊δ are studied in the framework of the extended Hubbard model with the use of the spin-wave approximation. It is shown that the bound states are subdivided into two ...
  • Phonon and magnon mediated d-wave superconductivity in cuprates 
    Sherman, A.; Schreiber, M. (Физика низких температур, 1996)
    We use the Eliashberg formalism for calculating Tc in the 2D t-J model supplemented by an interaction with fulJy-symmetric apex-oxygen vibrations. It is shown that in this model holes form an anomalous 2D Fermi liquid with ...
  • Spin dynamics in cuprate perovskites 
    Sherman, A.; Schreiber, M. (Физика низких температур, 2006)
    Results obtained with the use of the t–J model of Cu–O planes and Mori’s projection operator formalism are compared with data of neutron scattering experiments in lanthanum and yttrium cuprates. This comparison allows ...