Yamamoto, A., Takeshita, N., Terakura, C. Superconductivity up to 164 K in HgBa2Ca m−1Cu mO2 m+2+ δ ( m = l, 2, and 3) under quasihydrostatic pressures. A review on theories and experiments on cuprates superconductors from the viewpoint of strong electron correlation. Doping a Mott insulator: physics of high-temperature superconductivity. A review on the physics of strong electron correlation andMott transition including many experimental results. Correlated-electron physics in transition-metal oxides. The original paper of Berry phase revealing the geometrical nature of quantum mechanics. Quantal phase factors accompanying adiabatic changes. Macroscopic electric polarization as a geometric quantum phase. Theory of polarization of crystalline solids. Here, we review the basic principles and the current status of the emergent phenomena and functions in materials from the viewpoint of strong correlation and topology.Īnderson, P. Dissipationless electronics using topological currents and quantum spins, energy harvesting such as photovoltaics and thermoelectrics, and secure quantum computing and communication are the three major fields of applications working towards this goal. These phenomena will probably be crucial for developing the next-generation quantum technologies that will meet the urgent technological demands for achieving a sustainable and safe society. These include the Mott transition, high-temperature superconductivity, topological superconductivity, colossal magnetoresistance, giant magnetoelectric effect, and topological insulators. Materials can harbour quantum many-body systems, most typically in the form of strongly correlated electrons in solids, that lead to novel and remarkable functions thanks to emergence-collective behaviours that arise from strong interactions among the elements.
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