II.2 Cuprate and other unconventional superconductors

ANISOTROPIC RESONANCE PEAK IN ORTHORHOMBIC SUPERCONDUCTORS
  • Dirk Manske
  • Ilya Eremin
Conference paper
Part of the NATO Science Series book series (NAII, volume 241)

Abstract

Extending our previous studies employing a generalized RPA-type theory we calculate the in-plane anisotropy of the magnetic excitations in hole-doped high-Tc superconductors. Using an effective two-dimensional one-band Hubbard model we consider anisotropic hopping matrix elements (tx ≠ ty) and a mixing of d- and s-wave symmetry of the superconducting order parameter in order to describe orthorhombic superconductors. We compare our calculations with new experimental data on fully untwinned YBa2Cu3O6.85 and find good agreement. Our results are in contrast to earlier interpretations on the in-plane anisotropy in terms of stripes.

Keywords

Anisotropy Recombination Coherence Hunt Univer 

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Copyright information

© Springer 2007

Authors and Affiliations

  • Dirk Manske
    • 1
  • Ilya Eremin
    • 2
    • 3
  1. 1.Institut für Theoretische Physik, ETH Zürich, HönggerbergZürichSwitzerland
  2. 2.Max-Planck-Institut für Germany Physik komplexer SystemeDresdenGermany
  3. 3.Institute für Mathematische und Theoretische PhysikTechnische Universität Carolo-Wilhelmina zu BraunschweigBraunschweigGermany

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