Development of a versatile micro-focused angle-resolved photoemission spectroscopy system with Kirkpatrick-Baez mirror optics
Abstract
Angle-resolved photoemission spectroscopy using a micro-focused beam spot (micro-ARPES) is becoming a powerful tool to elucidate key electronic states of exotic quantum materials. We have developed a versatile micro-ARPES system based on synchrotron radiation beam focused with a Kirkpatrick-Baez mirror optics. The mirrors are monolithically installed on a stage, which is driven with five-axes motion, and are vibrationally separated from the ARPES measurement system. Spatial mapping of the Auphotolithography pattern on Si signifies the beam spot size of 10 m (horizontal) x 12 m (vertical) at the sample position, which is well suited to resolve the fine structure in local electronic states. Utilization of the micro beam and the high precision sample motion system enables the accurate spatially resolved band-structure mapping, as demonstrated by the observation of a small band anomaly associated with tiny sample bending near the edge of a cleaved topological insulator single crystal.
Keywords
Cite
@article{arxiv.2203.07604,
title = {Development of a versatile micro-focused angle-resolved photoemission spectroscopy system with Kirkpatrick-Baez mirror optics},
author = {Miho Kitamura and Seigo Souma and Asuka Honma and Daisuke Wakabayashi and Hirokazu Tanaka and Akio Toyoshima and Kenta Amemiya and Tappei Kawakami and Katsuaki Sugawara and Kosuke Nakayama and Kohei Yoshimatsu and Hiroshi Kumigashira and Takafumi Sato and Koji Horiba},
journal= {arXiv preprint arXiv:2203.07604},
year = {2022}
}
Comments
21 pages, 8 figures