Applications for ultimate spatial resolution in LASER based $\mu$-ARPES: A FeSe case study

Abstract

Combining Angle resolved photoelectron spectroscopy (ARPES) and a $\mu$-focused Laser, we have performed scanning ARPES microscopy measurements of the domain population within the nematic phase of FeSe single crystals. We are able to demonstrate a variation of the domain population density on a scale of a few 10 $\mu$m while constraining the upper limit of the single domain size to less than 5 $\mu m$. This experiment serves as a demonstration of how combining the advantages of high resolution Laser ARPES and an ultimate control over the spatial dimension can improve investigations of materials by reducing the cross contamination of spectral features of different domains.

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Cited by in corpus (4)

• Revealing the single electron pocket of FeSe in a single orthorhombic domain
• FeSe and the missing electron pocket problem
• Spectromicroscopic measurement of surface and bulk band structure interplay in a disordered topological insulator
• Spatially-resolved electronic structure of stripe domains in IrTe${}_2$ through electronic structure microscopy