Electronic Structure and Many-Body Physics of Novel Materials

The physical properties of solids depend crucially on the quantum nature of the electrons. Understanding this requires a many-body, quantum-mechanical approach. Techniques which are employed range from large scale supercomputer calculations to investigations of simplified model Hamiltonians by methods of quantum field theory and statistical mechanics. Systems of interest in the group include unconventional superconducting materials and materials with novel types of order. Some of the unconventional superconductors studied are the high temperature superconductors, superconductors with p-wave spin triplet pairing, ferromagnet-superconductor nanostructures, and topological superconductivity. The novel types of order of interest to the group arise when the microscopic interactions between spins, charges and orbitals give rise to unconventional magnetism, charge density waves or orbitally ordered structures.

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