Fig. 1 Net-patterned Au mask on B-diamond for binding energy calibrationFig. 1 Soft X-ray microscopy located in NanoTerasu.59[1] J. W. Liu, T. Teraji, B. Da, Y. Koide, Applied Physics Letters, 125 [10] 101601 (2024). Poster Award NomineePoster Award NomineeP2-05Calibrating Binding Energy for Insulating/Semi-Insulating Carbon-Related Materials in X-Ray Photoelectron Spectroscopy MeasurementsJiangwei Liu1, Tokuyuki Teraji1, Bo Da2, and Yasuo Koide11 Research Center for Electronic and Optical Materials, National Institute for Materials Science (NIMS) 2 Center for Basic Research on Materials, National Institute for Materials Science (NIMS)Due to the presence of an intrinsic C 1s peak in carbon-related materials, it is impossible to calibrate its binding energies using the adventitious C 1s peak (284.8 eV) during X-ray photoelectron spectroscopy measurement. The absence of accurate binding energy measurement makes it challenging to determine the interfacial band bending for the carbon-related material-based heterojunctions. To overcome this issue, a net-patterned gold (Au) mask is applied to the semi-insulating boron-doped diamond (B-diamond) to suppress the charge-up effect and calibrate the binding energy using the standard Au 4f peak (83.96 eV) [Image shown in Fig. 1]. The B-diamond shows downward band bending towards the surface with valence band maximum of 0.85 eV. Upon the formation of Al2O3 using the atomic layer deposition technique, the interfacial band bending for the Al2O3/B-diamond has been clarified [1].P2-06Time- and Space-resolved Soft X-ray Microscopy for Magnetic Materials Yuta Ishii1, Yusuke Kozuka2, Hironori Nakao3, and Yuichi Yamasaki11 Center for Basic Research on Materials, National Institute for Materials Science (NIMS)2 Research Center for Materials Nanoarchitectonics, National Institute for Materials Science (NIMS)3 Institue of Materials Structure Science, High Energy Accelerator Research Organization (KEK)The behaviors of magnetic moments in materials are promising for the advancement of spintronic devices. To facilitate the development of magnonic technologies, the direct detection of magnetic behaviors in real time and space is essential for comprehending the fundamental mechanisms underlying various magnetic phenomena. We have recently developed soft X-ray microscopy (as shown in Fig. 1) which is capable of several imaging measurements, including the visualization of magnetic textures [1], observation of the dynamics of magnetic moments [2], and detection of the spiral phase of X-ray beams [3]. Especially, we have successfully visualized spin waves in Py (Fe-Ni) thin films using time- and space-resolved measurements, where we identified non-reciprocal spin waves in amplitude and wave number. I would like to present the current techniques and our experimental results in my presentation.[1] Y. Ishii, et al., JPS Conf. Proc., 38, 011190 (2023).[2] Y. Ishii, et al., Sci. Rep., 14, 15504 (2024). [3] Y. Ishii, et al., PRApplied., 14, 064069 (2020).; Y. Ishii, et al., Sci. Rep., 12, 1044 (2022).
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