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    Physicists create Artificial ‘Graphene’

    February 2, 2016, Categories  Physics, Technology/Electronics

    (a) One unit cell of the perovskite structure. A RE ion, located at the center of the cube, has been omitted for clarity. (b) Bilayer of NdNiO3 sandwiched between layers of dielectric LaAlO3 along the pseudocubic [111] direction. (c) Schematic of a (111) bilayer that forms a buckled honeycomb lattice. The Ni atoms on the individual (111) plane are highlighted by thin and thick red circles, respectively. (d) HAADF-STEM image of the [ 2NdNiO3/4LaAlO3 ]x3 superlattice, grown on LaAlO3 (111) substrate.

    (a) One unit cell of the perovskite structure. A RE ion, located at the center of the cube, has been omitted for clarity. (b) Bilayer of NdNiO3 sandwiched between layers of dielectric LaAlO3 along the pseudocubic [111] direction. (c) Schematic of a (111) bilayer that forms a buckled honeycomb lattice. The Ni atoms on the individual (111) plane are highlighted by thin and thick red circles, respectively. (d) HAADF-STEM image of the [ 2NdNiO3/4LaAlO3 ]x3 superlattice, grown on LaAlO3 (111) substrate.

    An international group of physicists led by University of Arkansas has created an artificial material with a structure comparable to graphene.
    “We’ve basically created the first artificial graphene-like structure with transition metal atoms in place of carbon atoms,” said Jak Chakhalian, profes...

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