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arXiv · 2006.03273

Time-resolved resonant elastic soft X-ray scattering at Pohang Accelerator Laboratory X-ray Free Electron Laser

Hoyoung Jang·Hyeong-Do Kim·Minseok Kim·Sang Han Park·Soonnam Kwon·Ju Yeop Lee·Sang-Youn Park·Gisu Park·Seonghan Kim·HyoJung Hyun·Sunmin Hwang·Chae-Soon Lee·Chae-Yong Lim·Wonup Gang·Myeongjin Kim·Seongbeom Heo·Jinhong Kim·Gigun Jung·Seungnam Kim·Jaeku Park·Jihwa Kim·Hocheol Shin·Jaehun Park·Tae-Yeong Koo·Hyun-Joon Shin·Hoon Heo·Changbum Kim·Changi-Ki Min·Jang-Hui Han·Heung-Sik Kang·Heung-Soo Lee·Kyung Sook Kim·Intae Eom·Seungyu Rah
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Abstract

Resonant elastic X-ray scattering has been widely employed for exploring complex electronic ordering phenomena, like charge, spin, and orbital order, in particular in strongly correlated electronic systems. In addition, recent developments of pump-probe X-ray scattering allow us to expand the investigation of the temporal dynamics of such orders. Here, we introduce a new time-resolved Resonant Soft X-ray Scattering (tr-RSXS) endstation developed at the Pohang Accelerator Laboratory X-ray Free Electron Laser (PAL-XFEL). This endstation has an optical laser (wavelength of 800 nm plus harmonics) as the pump source. Based on the commissioning results, the tr-RSXS at PAL-XFEL can deliver a soft X-ray probe (400-1300 eV) with a time resolution about ~100 fs without jitter correction. As an example, the temporal dynamics of a charge density wave on a high-temperature cuprate superconductor is demonstrated.

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Hoyoung Jang, Hyeong-Do Kim, Minseok Kim, Sang Han Park, Soonnam Kwon, Ju Yeop Lee, Sang-Youn Park, Gisu Park, Seonghan Kim, HyoJung Hyun, Sunmin Hwang, Chae-Soon Lee, Chae-Yong Lim, Wonup Gang, Myeongjin Kim, Seongbeom Heo, Jinhong Kim, Gigun Jung, Seungnam Kim, Jaeku Park, Jihwa Kim, Hocheol Shin, Jaehun Park, Tae-Yeong Koo, Hyun-Joon Shin, Hoon Heo, Changbum Kim, Changi-Ki Min, Jang-Hui Han, Heung-Sik Kang, Heung-Soo Lee, Kyung Sook Kim, Intae Eom, Seungyu Rah. 2020-06-05. Time-resolved resonant elastic soft X-ray scattering at Pohang Accelerator Laboratory X-ray Free Electron Laser. https://doi.org/10.1063/5.0016414

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