14th International Workshop on Slow Positron Beam Techniques & Applications | |
Symphonic use of quantum beams for materials science -now and future- | |
Yamada, K.^1 ; Hiraka, H.^2 | |
Institute of Materials Structure Science, KEK, Oho1-1, Ibaraki, Tsukuba | |
305-0801, Japan^1 | |
Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Ibaraki, Mito | |
310-8512, Japan^2 | |
关键词: Antiferromagnetics; Future prospects; High Tc superconductors; Hydrogen concentration; Impurities in; La2CuO4; Synchrotron x rays; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/791/1/012001/pdf DOI : 10.1088/1742-6596/791/1/012001 |
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来源: IOP | |
【 摘 要 】
Symphonic use of multiple probes for materials science is discussed through two recent studies on high-Tcsuperconductors, and a future prospect of the symphonic use is given. For a hydrogen-doped iron-based superconductor, which shows a double-peaked superconducting dome as a function of hydrogen concentration, symphonic use of neutron, muon and synchrotron x-ray probes discovered a second antiferromagnetic (AF) phase and its contrasting feature compared to the first AF phase. A drastic change of the AF order by Ni impurities in slightly hole-doped La2CuO4, a Mott insulator, has been studied by using neutron and synchrotron x-ray probes. The symphonic use of these probes clarified the microscopic dual electronic states for both Cu and Ni in this system.
【 预 览 】
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