Researchers at Columbia University in New York have observed a Bose-Einstein condensate of excitons in the quantum Hall regime in a double bilayer graphene heterostructure. Such a system is thought to host an excitonic analogue of the superconducting state at high temperature and zero magnetic field and so could be used to study strongly interacting bosonic particles in the solid state. The condensate could also be used to fabricate Josephson junctions, which serve as building blocks for quantum computers……..
http://nanotechweb.org/cws/article/tech/68901
