Presented are the results of
calculations suggesting that the quasi-one dimensional organic
superconductors (TMTSF)2X may show a substantial increase in
their superconducting and spin density-wave ordering temperatures when
the Fermi level is raised through application of an electrostatic
gating voltage. A rich behavior is observed, strongly dependent
on the form of the superconducting order parameter, as the Fermi level
approaches the van Hove singularity at ka = 0. Included
are predictions for the behavior of these materials under zero and
moderate applied pressure. It is found that TSDW as high as 50 K and
superconducting Tc
as high as 20 K may be achieved at optimal gate voltages of
approximately 100 mV.