Condensed Matter Seminar, Allan MacDonald, UT, Austin, "Exciton Condensates are Super!"

Mon, Apr 6, 2015, 1:15 pm to 2:30 pm
PCTS Seminar Room
Electronic systems can have a type of order in which coherence is spontaneously established between two distinct groups of electrons. So far this (particle-hole or exciton condensate) type of order has been found only in double-layer two-dimensional electron gas systems, and only in certain strong magnetic field limits. I will review some of the surprising superfluid transport effects that have been observed in double-layer exciton condensates, and speculate on the possibility of realizing similar effects at room temperature either by enhancing the stability of bilayer exciton condensate states using two-dimensional materials, or by designing ferromagnetic materials with appropriate properties.