Heat capacity of kagome 3He monolayer film on graphite

摘要: The heat capacities of second layer 3He-4He mixture solid films are measured. total areal densities adjusted to be the 4/7 phase commensurate underlying 4He first layer, and fractions 3He in almost three-fourths amount second-layer helium atoms. According recent theoretical prediction adsorption structure by Takagi, atoms such a film expected nuclear spin system pure kagome lattice. capacity measurements between 0.1 80 mK reveal double peak structures. higher-temperature peaks appear at around 30 mK; these thought arise from replacement magnitude strongly supports proposed not one previously Elser, gives strong supporting evidence realization lower-temperature must short-range ordering spins on As compared phase, i.e., triangular slower is observed lattice, which agrees with predictions.