Abstract
We calculate the superconducting transition temperature for the two-dimensional, two-component electron gas. We use an effective interaction which approximates vertex corrections by means of local-field factors, which are obtained self-consistently; this interaction includes but is not limited to the "acoustic plasmon" (AP) mode. The gap equation, which gives , includes the full frequency dependence of the interaction. We find two main results: (i) the obtained are low (mK); (ii) the AP itself essentially does not contribute to the pairing transition, which is rather due to low-frequency electron-hole pair excitations.
- Received 6 September 1988
DOI:https://doi.org/10.1103/PhysRevB.39.2740
©1989 American Physical Society