Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Masaki Imamura"'
Autor:
Masaki Imamura, Kazutoshi Takahashi
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-7 (2024)
Abstract This study proposed an unsupervised machine-learning approach for analyzing spatially-resolved ARPES. A combination of non-negative matrix factorization (NMF) and k-means clustering was applied to spatially-resolved ARPES spectra of the grap
Externí odkaz:
https://doaj.org/article/6aba683e6d7f4b2099e5d4f4e0b9d197
Autor:
Hiroyuki Kumazoe, Kazunori Iwamitsu, Masaki Imamura, Kazutoshi Takahashi, Yoh-ichi Mototake, Masato Okada, Ichiro Akai
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023)
Abstract We analyzed the X-ray photoelectron spectra (XPS) of carbon 1s states in graphene and oxygen-intercalated graphene grown on SiC(0001) using Bayesian spectroscopy. To realize highly accurate spectral decomposition of the XPS spectra, we propo
Externí odkaz:
https://doaj.org/article/7853873df025418889420738ebf3f84f
Publikováno v:
AIP Advances, Vol 13, Iss 5, Pp 055303-055303-6 (2023)
Topological phase transitions have been actively investigated to understand the fundamental properties and to develop applications for spintronics. In this study, we focused on Sb ultrathin films that undergo a topological phase transition by lattice
Externí odkaz:
https://doaj.org/article/e4a480ebc36442f291a5a7e4c7502f92
Autor:
Kazutoshi Takahashi, Yuki Umeda, Masaki Imamura, Marina Takaira, Yoshifumi Ikoma, Yasutomo Arai
Publikováno v:
APL Materials, Vol 11, Iss 4, Pp 041114-041114-8 (2023)
The composition- and structure-dependent electronic band structure of SiGe alloys facilitates a rich variety of its application in various fields. In this study, we performed high-resolution core-level and angle-resolved photoemission spectroscopy (A
Externí odkaz:
https://doaj.org/article/ba73116ffcc74626908e60aaf09e6869
Autor:
Masaki Imamura, Hidehiro Yasuda, Kazuyoshi Sato, Kazutoshi Takahashi, Hirotaro Mori, Shuhei Ichikawa
Publikováno v:
RSC Advances. 11:894-898
A thermally impossible positive free energy reaction can proceed by electron-orbital-selective excitation. When the Si 2p core level is photo-excited in Pt/SiOx bilayer films, Coulomb repulsion at the final two-hole state localized in the valence ban
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07c9beaa7ac2dfbd4e054113552e3818
https://doi.org/10.1039/d0ra07151j
https://doi.org/10.1039/d0ra07151j
Publikováno v:
Surface Science. 726:122162
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64800f9b6caf3fdf1c8f9bb6b9909eb1
https://doi.org/10.1016/j.susc.2022.122162
https://doi.org/10.1016/j.susc.2022.122162
Publikováno v:
Journal of physics. Condensed matter : an Institute of Physics journal. 34(23)
Along with the great interest in two-dimensional elemental materials that has emerged in recent years, atomically thin layers of bismuth have attracted attention due to physical properties on account of a strong spin-orbit coupling. Thickness depende
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::7f14723fee41f152a0e3bbcca0dfd6a0
https://pubmed.ncbi.nlm.nih.gov/35290972
https://pubmed.ncbi.nlm.nih.gov/35290972
Publikováno v:
Journal of Physics: Condensed Matter. 34:235502
Along with the great interest in two-dimensional elemental materials that has emerged in recent years, atomically thin layers of bismuth have attracted attention due to physical properties on account of a strong spin–orbit coupling. Thickness depen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63b88d180b2edcd55a156a724b8328c2
https://doi.org/10.1088/1361-648x/ac5e06
https://doi.org/10.1088/1361-648x/ac5e06
Autor:
Koji Ishibashi, Ku Ding Tsuei, Hirofumi Ishii, Masaki Imamura, Sho Otsuru, Tatsuya Kawae, Masashi Nantoh, Kazutoshi Takahashi, Tetsuya Kida, Yoichi Ishiwata, Toru Maruyama, Yen Fa Liao, Yuji Inagaki, Takuto Tsukahara, Satoshi Suehiro
Publikováno v:
Physical Review B. 101
Doping ${\mathrm{V}}_{2}{\mathrm{O}}_{3}$ with Ti stabilizes the corundum paramagnetic metallic phase and restricts the transition to the monoclinic antiferromagnetic insulating phase at lower temperatures. In this study, we investigated the dependen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52dacb71e677669e6564349ab3a47ff8
https://doi.org/10.1103/physrevb.101.035415
https://doi.org/10.1103/physrevb.101.035415
Autor:
Naoki Tokumasu, Shin-ichi Kimura, Patrick Le Fèvre, François Bertran, Yoshiyuki Ohtsubo, Kazutoshi Takahashi, Hiroshi Watanabe, Isamu Yamamoto, Takuto Nakamura, Masaki Imamura, Junpei Azuma
Surface electronic structure and its one-dimensionality above and below the Fermi level ($E_{\rm F}$) were surveyed on the Bi/GaSb(110)-(2$\times$1) surface hosting quasi-one-dimensional (Q1D) Bi chains, using conventional (one-photon) and two-photon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c3ae42f4431d78738a7c40ef2c2ef88
