In this project, the following six groups will promote new interdisciplinary research to establish a scheme for seamlessly identifying, synthesizing, and measuring materials that will realize the targeted quantum emergent phenomenon, and to establish correlation design science.

[A01: Emergent matter science by spin correlations]
Focusing on the spin degree of freedom of electrons in quantum materials, we develop new magnetic materials and explore physical phenomena through the design of spin correlations. By coordinating developments of theoretical concepts, model calculations, and materials design with materials synthesis and precision cutting-edge measurements, we aim to explore new emergent physical properties brought about by correlations involving the spin degree of freedom in quantum materials, and to realize robust, uniquely responsive, and cradle materials.

[A02: Correlation design of emergent phenomena in quantum metals]
We explore novel quantum phases through correlation design. In collaboration with first-principles calculations, we will strategically narrow down candidate materials and explore novel quantum phases, such as robust, anomalous, responsive, and cradle materials, through a tightly integrated effort between theoretical and experimental researchers. Our research will focus on the following key areas:
(1) Sequential Quantum Phase Transitions in kagome lattice superconductors, involving loop current order, bond order, and pair density wave superconductivity. (2) Anomalous Responses—including non-reciprocity, non-equilibrium behavior, and non-linearity emerging from multiple quantum phase transitions. (3) Robust Topological Phase Transitions in quasi crystal superconductors. (4) Novel Experimental Approaches for identifying quantum phases in cradle materials, including dynamics measurements with solid-state quantum sensors and elastoresistance measurements using piezoelectric elements, along with the development of corresponding theoretical frameworks. (5) Realization of Novel Quantum Materials, such as multilayer nickelate high-temperature superconductors and functional strongly correlated metals that simultaneously time-reversal and spatial-inversion symmetry breaking.
By promoting close collaboration within and across research teams, we aim to establish a new framework for correlation design science that will enable the discovery and control of emergent quantum phases.

[A03: Correlation design of exotic superconductors]
By integrating research on three-dimensional superconductors with one- and two-dimensional artificial quantum systems, we will advance the correlation design science of “exotic superconductors” that realize fundamental concepts not found in conventional superconductors. By introducing new internal degrees of freedom, we will design and experimentally demonstrate nascent exotic superconductors. Furthermore, we will establish dynamic control methods for superconductors using light and electric currents, and realize unknown superconducting phases. We will also explore nonreciprocal and nonlinear responses in superconductors.

[B01: Design and Creation of Topological Physics]
We pursue the possibility of new types of magnetism, superconductivity, and non-equilibrium phenomena arising from the concerted effects of band topology and interactions in materials, and advance theoretically-driven design of these correlations. We also aim to discover and verify quantum emergent phenomena that could not be predicted by conventional theoretical systems, and to design and create exotic, robust materials that could not be realized by conventional experiments.

[B02: Emergent materials induced by non-equilibrium and nonlinear properties]
Using theory and experiment, we aim to predict and discover non-equilibrium　quantum emergent phenomena not realized in equilibrium systems in magnetic　materials, superconductors, topological materials, etc. With the ever-increasing　power of computers and new machine learning methods and quantum computing, the theoretical group quantitatively predicts non-equilibrium quantum phases, which the experimental group then uses as a reference for observation. In particular, by using highly controlled light, we aim to realize non-equilibrium phenomena such as non-equilibrium superconductivity, magnetization reversal using familiar elements, and power-saving manipulation of magnetic skyrmions, and to pioneer unique giant nonlinear responses and robust functionality.

[B03: Materials design accelerated by data-driven approaches and computational science]
To bridge the gap between predictions from theoretical models and real materials, we will develop non-empirical first-principles computational methods and a platform for data-driven approaches. By doing so, we will efficiently accelerate the search for robust materials, materials exhibiting unique responses, and “cradle” materials that embody the emergent functionalities proposed by each research team, thereby contributing to the advancement of correlation-based materials design.