ISSP - The institute for Solid State Physics

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Misawa Team
Project Researcher

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Behavior of electrons in solids is a typical example of quantum-many body systems. In the quantum many-body systems, various exotic phenomena emerge, which is hardly expected from the behavior of single electron. We try to theoretically reveal the origins of the exotic phenomena in the quantum many-body systems, and aim to predict and design the new exotic phenomena. We have been developed numerical methods for treating the quantum many-body systems and some of them are released as open-source software packages, for example, we release HΦ (software for exact diagonalization) and mVMC (software for many-variable variational Monte Carlo method). By using mVMC, we recently reveal the origin of the anomalous pinning of the superconducting critical temperatures observed at the interfaces of the cuprates. We also clarify the finite-temperature effects of the quantum spin liquids in the frustrated Hubbard model and finite-temperature effects on the one-third magnetic plateau in the quantum Heisenberg model on the kagome lattice.