Sn. Artemenko et Ag. Kobelkov, LINEAR-RESPONSE AND COLLECTIVE OSCILLATIONS IN SUPERCONDUCTORS WITH D-WAVE PAIRING, Physical review. B, Condensed matter, 55(14), 1997, pp. 9094-9097
Simple equations for the linear response of layered superconductors wi
th d-wave symmetry of the order parameter are derived by means of kine
tic equations for Green's functions. Responses to solenoidal and poten
tial electric fields have different frequency dependencies. The dampin
g of plasma oscillation of superconducting electrons is determined by
dielectric relaxation and is small. Rt laxation of branch imbalance de
termined by elastic scattering is large enough to make the Carlson-Gol
dman mode in d-wave superconductors overdamped.