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Colloquium: Dr. Shua Sanchez | MIT

In-Person PHYS 401


Physics : 401

Date & Time

January 31, 2024, 11:00 am12:00 pm


TITLE:  "Quantum criticality, nematicity, and field-induced superconductivity in iron-based superconductors”

ABSTRACT: Strongly interacting electrons give rise to fascinating and useful phenomena, such as nematicity, magnetism, and superconductivity. However, the intertwined charge, spin, and lattice degrees of freedom obscure the driving mechanism of these symmetry-breaking phases. In this talk, I will discuss a new experimental platform which combines tunable applied strain, transport measurements, and x-ray techniques to probe the origin of ordered phases in strongly correlated materials. I will discuss two recent studies in iron-based superconductors, which examine (1) the large nematic-driven resistivity anisotropy in doped BaFe 2 As 2 and its connection to quantum critical superconductivity, and (2) field-induced superconductivity in doped EuFe 2 As 2 , a ferromagnetic superconductor. These diverse investigations demonstrate the power and promise of multimodal characterization for solving other puzzles in strongly correlated materials.