Zobrazeno 1 - 10
of 339
pro vyhledávání: '"Oguchi, Tamio"'
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:
Hessmann, Stefaan S. P., Schütt, Kristof T., Gebauer, Niklas W. A., Gastegger, Michael, Oguchi, Tamio, Yamashita, Tomoki
Global optimization of crystal compositions is a significant yet computationally intensive method to identify stable structures within chemical space. The specific physical properties linked to a three-dimensional atomic arrangement make this an esse
Externí odkaz:
http://arxiv.org/abs/2408.04073
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
Autor:
Hirai, Daigorou, Anbai, Takahito, Konoike, Takako, Uji, Shinya, Hattori, Yuya, Terashima, Taichi, Ishikawa, Hajime, Kindo, Koichi, Katayama, Naoyuki, Oguchi, Tamio, Hiroi, Zenji
Publikováno v:
J. Phys.: Condens. Matter 35, 405503 (2023)
Quantum oscillations in magnetic torque and electrical resistivity were measured to investigate the electronic structure of \b{eta}-ReO2, a candidate hourglass nodal chain metal (Dirac loop chain metal). All the de Haas-van Alphen oscillation branche
Externí odkaz:
http://arxiv.org/abs/2309.08073
Publikováno v:
Applied Physics Express 15, 075506 (2022)
The origin of the phase stability of 18$R$ Mg-Zn-Y alloys with a long-period stacking order (LPSO) is studied using first-principles calculations. We calculate the heat of formation as a function of the number of Zn vacancies to discuss the role of Z
Externí odkaz:
http://arxiv.org/abs/2206.10873
Publikováno v:
J. Phys. Soc. Jpn. 91, 074801, 2022
NaAlSi and NaAlGe are isostructural and isoelectronic semimetals with topological nodal lines close to the Fermi level. Despite having virtually identical electronic structures, NaAlSi exhibits superconductivity below Tc = 6.8 K, whereas NaAlGe does
Externí odkaz:
http://arxiv.org/abs/2206.04226
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
Autor:
Tran, Hung Ba, Momida, Hiroyoshi, Matsushita, Yu-ichiro, Sato, Kazunori, Makino, Yukihiro, Shirai, Koun, Oguchi, Tamio
Publikováno v:
Physical Review B 105, 134402 (2022)
It is well known that the temperature dependence of the effective magnetocrystalline anisotropy energy obeys the $l(l+1)/2$ power law of magnetization in the Callen-Callen theory. Therefore, according to the Callen-Callen theory, the magnetocrystalli
Externí odkaz:
http://arxiv.org/abs/2112.08154
Publikováno v:
Acta Materialia 231, 117851 (2022)
CrI$_{3}$ is considered to be a promising candidate for spintronic devices and data storage. We derived the Heisenberg Hamiltonian for CrI$_{3}$ from density functional calculations using the Liechtenstein formula. Moreover, the Monte--Carlo simulati
Externí odkaz:
http://arxiv.org/abs/2111.02063
Publikováno v:
J. Phys. Soc. Jpn. 90, 094708 (2021)
The transport and thermodynamic properties of $\beta$-ReO$_{2}$ crystallizing in a nonsymmorphic structure were studied using high-quality single crystals. An extremely large magnetoresistance (XMR) reaching 22,000 $\%$ in a transverse magnetic field
Externí odkaz:
http://arxiv.org/abs/2105.05526