Visualization of spin-polarized electronic states by imaging-type spin-resolved photoemission microscopy

• DOI: 10.1080/27660400.2024.2328206
• Publication Date: 2024-04-02T13:56:40Z
• Authors: Koichiro Yaji; Shunsuke Tsuda
• Keywords: Photoemission electron microscopy

Harnessing electron spin is crucial in developing energy-saving and high-speed devices for the next generation. In this scheme, visualizing spin-polarized electronic states aids designing new materials devices. Spin-resolved photoemission spectroscopy provides information on states. To investigate microscopic devices, spin-resolved requires spatial resolution a sub-micrometer scale. Here we show imaging-type microscopy (iSPEM) with an ultraviolet laser developed at National Institutes Materials Science (NIMS). Our iSPEM achieves of 420 nm, drastically improving by more than order magnitude compared to conventional instruments. Besides, multichannel detector significantly reduces data acquisition time four orders The machine elucidates scale materials, polycrystals, device structure samples, so on, which have yet be target spectroscopy.