Перегляд за автором "Wessel, S."

Сортувати за: Порядок: Результатів:

  • Classical and quantum anisotropic Heisenberg antiferromagnets 
    Selke, W.; Bannasch, G.; Holtschneider, M.; McCulloch, I.P.; Peters, D.; Wessel, S. (Condensed Matter Physics, 2009)
    We study classical and quantum Heisenberg antiferromagnets with exchange anisotropy of XXZ-type and crystal field single-ion terms of quadratic and quartic form in a field. The magnets display a variety of phases, including ...
  • Magnetocaloric effect in quantum spin-s chains 
    Honecker, A.; Wessel, S. (Condensed Matter Physics, 2009)
    We compute the entropy of antiferromagnetic quantum spin-s chains in an external magnetic field using exact diagonalization and Quantum Monte Carlo simulations. The magnetocaloric effect, i. e., temperature variations during ...