New long-lived state of matter found in superconductor 
US-based physicists have found a new, long-lived state of matter trapped in an iron pnictide superconductor. The physicists found the new state of matter while taking a series of snapshots using laser pulses of less than a trillionth of a second to study the superconductor. The physicists have described the state of matter as "long-lived, many-quasiparticle excitonic state".