Novel Phase Transitions in the Breathing Pyrochlore Lattice: ^{7}Li-NMR on LiInCr_{4}O_{8} and LiGaCr_{4}O_{8}

Novel Phase Transitions in the Breathing Pyrochlore Lattice: ^{7}Li-NMR on LiInCr_{4}O_{8} and LiGaCr_{4}O_{8}