Zobrazeno 1 - 10
of 226
pro vyhledávání: '"YAMAUCHI, KUNIHIKO"'
Flexoelectricity refers to a linear coupling between the electric polarization and the strain gradient, such as bending or asymmetric compression. This effect is enhanced in nano-scale structures, where grain boundaries or dislocation cores induce th
Externí odkaz:
http://arxiv.org/abs/2408.04985
Autor:
Honma, Asuka, Kabeya, Noriyuki, Souma, Seigo, Wang, Yongjian, Yamauchi, Kunihiko, Nakayama, Kosuke, Takane, Daichi, Ozawa, Kenichi, Kitamura, Miho, Horiba, Koji, Kumigashira, Hiroshi, Oguchi, Tamio, Takahashi, Takashi, Kimura, Noriaki, Ando, Yoichi, Sato, Takafumi
Publikováno v:
Phys. Rev. B 110, 115152 (2024)
Antiferromagnetic topological insulators (AF TIs) are predicted to exhibit exotic physical properties such as gigantic optical and topological magnetoelectric responses. While a key to achieving such phenomena relies on how to break the symmetry prot
Externí odkaz:
http://arxiv.org/abs/2406.13639
Density-functional-theory calculations were performed to investigate the magnetism in a series of triangular-lattice monolayer MCl2 (M=V, Mn, and Ni). The magnetic stability manifests a distinct chemical trend; VCl2 and MnCl2 show the antiferromagnet
Externí odkaz:
http://arxiv.org/abs/2308.06068
While the anomalous Hall effect takes place typically in ferromagnets with finite magnetization, large anomalous Hall conductivity in noncollinear antiferromagnetic systems has been recently observed and attracted much attention. In this study, we pr
Externí odkaz:
http://arxiv.org/abs/2301.10432
Autor:
Wang, Ke, Kimura, Shin-ichi, Yamauchi, Kunihiko, Yamahara, Hiroyasu, Murakami, Hironaru, Seki, Munetoshi, Oguchi, Tamio, Tabata, Hitoshi, Tonouchi, Masayoshi
Publikováno v:
Journal of Applied Physics; 12/28/2024, Vol. 136 Issue 24, p1-15, 15p
Autor:
Yamauchi, Kunihiko, Hamada, Ikutaro
The microscopic mechanism of the hydrogen-induced metal-insulator transition in SmNiO$_3$ is clarified by means of density-functional theory with the Hubbard U correction. While 100% of hydrogen doping per Ni atom has been supposed to be responsible
Externí odkaz:
http://arxiv.org/abs/2210.07656
Autor:
Riedl, Kira, Amoroso, Danila, Backes, Steffen, Razpopov, Aleksandar, Nguyen, Thi Phuong Thao, Yamauchi, Kunihiko, Barone, Paolo, Winter, Stephen M., Picozzi, Silvia, Valenti, Roser
Publikováno v:
Phys. Rev. B 106, 035156 (2022)
Motivated by the recent wealth of exotic magnetic phases emerging in two-dimensional frustrated lattices, we investigate the origin of possible magnetism in the monolayer family of triangular lattice materials $MX_2$ ($M$={V, Mn, Ni}, $X$={Cl, Br, I}
Externí odkaz:
http://arxiv.org/abs/2206.00016
The cathode properties of Na2MTiO4 (M: transition-metal element) are investigated by means of density-functional-theory calculations. The stability between the layered structure and the disordered structure are focused in comparison with the Li2MTiO4
Externí odkaz:
http://arxiv.org/abs/2112.12366
Publikováno v:
Phys. Rev. B 104, 014414 (2021)
The magnetic properties of two-dimensional VI3 bilayer are the focus of our first-principles analysis, highlighting the role of trigonal crystal-field effects and carried out in comparison with the CrI3 prototypical case, where the effects are absent
Externí odkaz:
http://arxiv.org/abs/2102.04173
Autor:
Kato, Takemi, Sugawara, Katsuaki, Ito, Naohiro, Yamauchi, Kunihiko, Sato, Takumi, Oguchi, Tamio, Takahashi, Takashi, Shiomi, Yuki, Saitoh, Eiji, Sato, Takafumi
Publikováno v:
Phys. Rev. Materials 4, 084202 (2020)
We investigated the Dirac-cone state and its modulation when an ultrathin film of topological insulator Bi2Se3 was epitaxially grown on a van-der-Waals ferromagnet Cr2Si2Te6 (CST) by angle-resolved photoemission spectroscopy. We observed a gapless Di
Externí odkaz:
http://arxiv.org/abs/2008.07927