Heterogeneous doping and superconductivity in La2CuO4-based heterostructures
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Novel Insulator to Metal Transition and Superconductivity in Sr-doped La2CuO4
We have studied the charge dynamics of Sr-doped La2CuO4 at hole concentration p = 0.07. We observed a clear indication of the competition between two Wigner lattice orders: One corresponds to a Tc = 15 K superconductivity and the other to Tc = 30K. Our results naturally explain the recent observation of metallic transport in extremely low (1%) Sr-doped La2CuO4 and establish a novel insulator to...
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تاریخ انتشار 2015