Numerical simulations reveal `rivers of charge` in materials that become superconducting at high temperatures
(PHYSorg.com Physics)

Imagine phones and laptops that never heat up or power grids that never lose energy. This is the dream of scientists working with so-called high-temperature superconductors, which can effortlessly carry electrical currents with no resistance. The first high-temperature superconducting materials, called cuprates, were discovered in the 1980s and would later be the subject of a Nobel Prize. The term `high-temperature` is relative-these materials operate at frosty temperatures of up to minus 135 degrees Celsius, a bit higher than their traditional counterparts, which work at even chillier temperatures near absolute zero (minus 273 degrees Celsius).