Development of laser-based scanning µ-ARPES system with ultimate energy and momentum resolutions

Hideaki Iwasawa; Eike F Schwier; Masashi Arita; Akihiro Ino; Hirofumi Namatame; Masaki Taniguchi; Yoshihiro Aiura; Kenya Shimada

doi:10.1016/j.ultramic.2017.06.016

Development of laser-based scanning µ-ARPES system with ultimate energy and momentum resolutions

Ultramicroscopy. 2017 Nov:182:85-91. doi: 10.1016/j.ultramic.2017.06.016. Epub 2017 Jun 15.

Authors

Hideaki Iwasawa¹, Eike F Schwier², Masashi Arita³, Akihiro Ino³, Hirofumi Namatame³, Masaki Taniguchi³, Yoshihiro Aiura⁴, Kenya Shimada³

Affiliations

¹ Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-0046, Japan; Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom. Electronic address: hideaki.iwasawa@diamond.ac.uk.
² Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-0046, Japan. Electronic address: schwier@hiroshima-u.ac.jp.
³ Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-0046, Japan.
⁴ National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan.

PMID: 28666139
DOI: 10.1016/j.ultramic.2017.06.016

Abstract

We have developed a laser-based scanning angle-resolved photoemission spectroscopy system (µ-ARPES) equipped with a high precision 6-axis control system, realizing not only high-resolution photoemission spectroscopy in energy and momentum, but also spatial resolution of a µm scale. This enables our µ-ARPES system to probe fine details of intrinsic electronic states near the Fermi level such as the superconducting gaps and lifetime broadening.

Keywords: Angle-resolved photoemission spectroscopy; Condensed-matter physics; Scanning photoemission microscopy; Spatial mapping of fine electronic structure.

Publication types

Research Support, Non-U.S. Gov't