As described here: http://www3.interscience.wiley.com/journal/112748702/abstract All superconductors are solids in their superconducting state, this state of matter presently having only been observed well below the melting temperature of the solid. The discovery of high-temperature superconductivity in cuprates,bismuth strontium calcium copper oxide, BSCCO and yttrium barium copper oxide, YBCO point to the possibility that superconductors with a high superconducting transition temperature may not be conventional Bardeen-Cooper-Schrieffer (BCS) superconductors. The highest temperature superconductor to date is mercury thallium barium calcium copper oxide (Hg12Tl3Ba30Ca30Cu45O125) superconducts at 135 deg kelvin (liquid nitrogen is 77 deg kelvin). The Meissner effect fails with Abrikosov vortices forming aroung non-superconducting channels in the material. While BCS superconductors exist in the solid state, the only exception known is metallic liquid hydrogen at ultrahigh pressures. Some have argued that a superconducting charged Bose liquid may be found in a true liquid state of condensed matter at ambient pressure. One experimental scenario outlined in fluid metal-ammonia solutions for stabilizing and observing a high-temperature superconducting liquid (ca. 230 K). Does anyone here have any knowledge (preferably first or second hand from an experimental source) about liquid superconductors?