The research group succeeded in observing the topological phase transition in which the material changes to the topological electronic phase by using soft X-ray, a light suitable for determining topology of materials by its substances rather than by its apparent appearance.
A joint research group succeeded in observing the topological phase transition in which a material changes to the topological electronic phase by using soft X-rays, light suitable for determining the topology of materials by their substances rather than by their appearance.
Inquiry number INS-0000000326 High resolution soft x-ray angle-resolved photoemission spectrometer(A2 station) Soft X-ray photoemission experimental station equipped with the high resolution photoelectron analyzer(SES2002, Gammadata SCIENTA) is designed for the study on the electronic structure of various kinds of materials.
In this experiment, the research group succeeded in directly proving that the 3d electrons of Ca contributed to the superconductivity, by measuring CaC6 crystals by a special experimental technique called resonant photoemission spectroscopy4 using Soft X-ray Spectroscopy of Solid Beamline BL25SU(Fig.2) of SPring-8.
In this research, a unique cell with an organic electrolyte solution and a lithium metal anode(negative electrode) for analyzing the cathode of a lithium-ion battery was developed in order to measure soft X-ray emission spectra during charging and discharging.
Using this thin-film electrode as the cathode in combination with a lithium negative electrode and a general organic electrolyte solution used in assessing lithium-ion batteries, a cell was developed that could perform soft X-ray emission spectroscopic measurements during charge-discharge operations Fig.
The scientists in this research group attempted to individually examine the magnetism of Ti and Mn using the soft X-ray magnetic circular dichroism(XMCD) measurement technique available at SPring-8, which enables high-sensitivity measurement of the magnetism of specific elements. They succeeded in observing the ferromagnetism of Ti ions that had been theoretically predicted.
The investment in flexible packaging business in the overseas market is an important strategic focus for the overseas business of the Rengo Group-which aims to be a"General Packaging Industry"(GPI)-and Rengo will work to further enhance its packaging supply system in the overseas market through synergy and in collaboration with group companies in Japan.
Aiming at verifying the feasibility of controlling the properties of exchange magnetic anisotropy after manufacture, the research group conducted experiments using the soft X-ray solid spectroscopy beam line(BL25SU) available at SPring-8*4(a large-scale synchronous radiation facility), and successfully demonstrated its potential.
Since the latter half of the 1980s, Dr. Sunyaev has expanded his activities to observational research in high-energy astronomy, taking the lead in X-ray and γ-ray astronomy satellite projects in Russia and Europe. Bringing many co-researchers together and elucidating the processes underlying hard X-ray and soft γ-ray emissions from various celestial bodies, he has made continued contributions to the development of high-energy astronomy.
This apparatus enables us to measure the angle-resolved photoemission spectrum using±7° acceptance angle of photoelectron analyzer, the temperature dependence of the electronic structure down to 20 K using He cryostat as well as the polarization dependence using linearly(vertical and horizontal) and circularly polarized soft x rays.
For this reason, topology of a substance has been judged only by its appearance. A joint research group succeeded in observing the topological phase transition in which a material changes to the topological electronic phase by using soft X-rays, light suitable for determining the topology of materials by their substances rather than by their appearance.
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