Interfacial Enhancement of Superconductivity in Monolayer FeSe / SrTiO3
Kyle Shen, Cornell University
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Abstract
Thin film heterostructures offer a powerful platform for controlling quantum materials. One striking example is the interfacial enhancement of the superconducting transition temperature Tc in FeSe (8K in bulk), to over 40 K for a single monolayer of FeSe grown on SrTiO3. This positions FeSe / SrTiO3 as an interesting platform for investigating fundamental questions about interfacial superconductivity, including the role of dimensionality, phase fluctuations, and the role of interfacial phonons. I will discuss our efforts to understand this system using a combination of molecular beam epitaxy growth, transport measurements, and ARPES.
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