Zobrazeno 1 - 10
of 1 249
pro vyhledávání: '"Yoshinori, Tokura"'
Strongly enhanced shift current at exciton resonances in a noncentrosymmetric wide-gap semiconductor
Autor:
Masao Nakamura, Yang-Hao Chan, Takahiro Yasunami, Yi-Shiuan Huang, Guang-Yu Guo, Yajian Hu, Naoki Ogawa, Yiling Chiew, Xiuzhen Yu, Takahiro Morimoto, Naoto Nagaosa, Yoshinori Tokura, Masashi Kawasaki
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-9 (2024)
Abstract Excitons are fundamental quasiparticles that are ubiquitous in photoexcited semiconductors and insulators. Despite causing a sharp and strong photoabsorption near the interband absorption edge, charge-neutral excitons do not yield photocurre
Externí odkaz:
https://doaj.org/article/af7164ccd844473ebdb4638cc97c2f94
Autor:
Yao Guang, Xichao Zhang, Yizhou Liu, Licong Peng, Fehmi Sami Yasin, Kosuke Karube, Daisuke Nakamura, Naoto Nagaosa, Yasujiro Taguchi, Masahito Mochizuki, Yoshinori Tokura, Xiuzhen Yu
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-8 (2024)
Abstract Current-driven dynamics of topological spin textures, such as skyrmions and antiskyrmions, have garnered considerable attention in condensed matter physics and spintronics. As compared with skyrmions, the current-driven dynamics of their ant
Externí odkaz:
https://doaj.org/article/379df99daed743c2852b5e3f20bd02c0
Autor:
Ziqian Wang, Meng Wang, Jannis Lehmann, Yuki Shiomi, Taka-hisa Arima, Naoto Nagaosa, Yoshinori Tokura, Naoki Ogawa
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-7 (2024)
Abstract Imaging antiferromagnetic 180° domains with actively controlled visibility is vital for both fundamental science and sophisticated applications. While optical second-harmonic generation (SHG) is a well-known technique for distinguishing suc
Externí odkaz:
https://doaj.org/article/ef19ee721f00417782363ad7c4eefb8a
Publikováno v:
Science and Technology of Advanced Materials, Vol 25, Iss 1 (2024)
Topological materials attract a considerable research interest because of their characteristic band structure giving rise to various new phenomena in quantum physics. Besides this, they are tempting from a functional materials point of view: Topologi
Externí odkaz:
https://doaj.org/article/822299e8edb44a5caf6b4f80c2052d3c
Autor:
Makiko Ogino, Yoshihiro Okamura, Kosuke Fujiwara, Takahiro Morimoto, Naoto Nagaosa, Yoshio Kaneko, Yoshinori Tokura, Youtarou Takahashi
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-7 (2024)
Abstract Direct conversion from terahertz photon to charge current is a key phenomenon for terahertz photonics. Quantum geometrical description of optical processes in crystalline solids predicts existence of field-unbiased dc photocurrent arising fr
Externí odkaz:
https://doaj.org/article/c90e5aa2533f4865945135352762cd19
Autor:
Max Hirschberger, Bertalan G. Szigeti, Mamoun Hemmida, Moritz M. Hirschmann, Sebastian Esser, Hiroyuki Ohsumi, Yoshikazu Tanaka, Leonie Spitz, Shang Gao, Kamil K. Kolincio, Hajime Sagayama, Hironori Nakao, Yuichi Yamasaki, László Forró, Hans-Albrecht Krug von Nidda, Istvan Kezsmarki, Taka-hisa Arima, Yoshinori Tokura
Publikováno v:
npj Quantum Materials, Vol 9, Iss 1, Pp 1-8 (2024)
Abstract Skyrmion lattices (SkL) in centrosymmetric materials typically have a magnetic period on the nanometer-scale, so that the coupling between magnetic superstructures and the underlying crystal lattice cannot be neglected. We reveal the commens
Externí odkaz:
https://doaj.org/article/180a5e334813442d8807b0976d1b8a29
Autor:
Aki Kitaori, Jonathan S. White, Victor Ukleev, Licong Peng, Kiyomi Nakajima, Naoya Kanazawa, Xiuzhen Yu, Yoshichika Ōnuki, Yoshinori Tokura
Publikováno v:
Communications Physics, Vol 7, Iss 1, Pp 1-7 (2024)
Abstract In helimagnetic metals, ac current-driven spin motions can generate emergent electric fields acting on conduction electrons, leading to emergent electromagnetic induction (EEMI). Recent experiments reveal the EEMI signal generally shows a st
Externí odkaz:
https://doaj.org/article/25b1909d3eda4b698fa1852572a7a447
Autor:
Xiuzhen Yu, Nobuto Nakanishi, Yi-Ling Chiew, Yizhou Liu, Kiyomi Nakajima, Naoya Kanazawa, Kosuke Karube, Yasujiro Taguchi, Naoto Nagaosa, Yoshinori Tokura
Publikováno v:
Communications Materials, Vol 5, Iss 1, Pp 1-8 (2024)
Abstract Two-dimensional skyrmion, a topological spin texture, has been extensively investigated in non-centrosymmetric magnets. It is thermodynamically stable in bulk materials and can extend perpendicularly to the spin-rotating plane, forming the t
Externí odkaz:
https://doaj.org/article/4a53888458724d4baa4b0a99887a564d
Autor:
Deepak Singh, Yukako Fujishiro, Satoru Hayami, Samuel H. Moody, Takuya Nomoto, Priya R. Baral, Victor Ukleev, Robert Cubitt, Nina-Juliane Steinke, Dariusz J. Gawryluk, Ekaterina Pomjakushina, Yoshichika Ōnuki, Ryotaro Arita, Yoshinori Tokura, Naoya Kanazawa, Jonathan S. White
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-12 (2023)
Abstract Magnetic skyrmions, topological vortex-like spin textures, garner significant interest due to their unique properties and potential applications in nanotechnology. While they typically form a hexagonal crystal with distinct internal magnetis
Externí odkaz:
https://doaj.org/article/ed9d840b9c874446a92c78136246aad3
Autor:
Fehmi Sami Yasin, Jan Masell, Kosuke Karube, Daisuke Shindo, Yasujiro Taguchi, Yoshinori Tokura, Xiuzhen Yu
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)
Abstract The use of magnetic states in memory devices has a history dating back decades, and the experimental discovery of magnetic skyrmions and subsequent demonstrations of their control via magnetic fields, heat, and electric/thermal currents have
Externí odkaz:
https://doaj.org/article/338c1d74304c410a96c4bd86c4d03e14