Skip to main content

Thermodynamics and optical conductivity of unconventional spin density waves

Abstract:

We consider the possibility of formation of an unconventional spin density wave (USDW) in quasi-one-dimensional electronic systems. In analogy with unconventional superconductivity, we develop a mean field theory of SDW allowing for the momentum dependent gap Δ( ) on the Fermi surface. Conditions for the appearance of such a low temperature phase are investigated. The excitation spectrum and basic thermodynamic properties of the model are found to be very similar to those of d-wave superconductors in spite of the different topology of their Fermi surfaces. Several correlation functions are calculated, and the frequency dependent conductivity is evaluated for various gap functions. The latter is found to reflect the maximum gap value, however with no sharp onset for absorbtion.

This is a preview of subscription content, access via your institution.

Author information

Authors and Affiliations

Authors

Additional information

Received 19 February 2001

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Dóra, B., Virosztek, A. Thermodynamics and optical conductivity of unconventional spin density waves. Eur. Phys. J. B 22, 167–178 (2001). https://doi.org/10.1007/PL00011140

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/PL00011140

  • PACS. 75.30.Fv Spin-density waves – 71.45.Lr Charge-density-wave systems – 78.30.Jw Organic compounds, polymers