Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Kaneshita, Eiji"'
Autor:
Tohyama, Takami, Ogura, Riku, Yoshinaga, Kensuke, Naito, Shin, Miyakawa, Nobuaki, Kaneshita, Eiji
Publikováno v:
J. Phys. Chem. Solids, 127, 252-257 (2019)
We synthesize a new titanium-oxide compound AlTi2O5 with pseudobrookite-type structure. The formal valence of Ti is 3.5+ that is the same as the Magneli compound Ti4O7 and the spinel compound LiTi2O4. AlTi2O5 exhibits insulating behavior in resistivi
Externí odkaz:
http://arxiv.org/abs/1811.01471
Autor:
Kaneshita, Eiji, Tohyama, Takami
Publikováno v:
Phys. Rev. B 94, 045132 (2016)
Motivated by a recent experimental report on in-plane anisotropic resistivity in the double-striped antiferromagnetic phase of FeTe, we theoretically calculate in-plane resistivity by applying a memory function approach to the ordered phase. We find
Externí odkaz:
http://arxiv.org/abs/1605.06604
Publikováno v:
Phys. Rev. B 92, 195103 (2015)
Nonresonant inelastic x-ray scattering (NIXS) is a possible tool to detect charge excitations in electron systems. In addition, multipole transitions at high-momentum-transfer region open a new possibility to determine orbital-selective electronic ex
Externí odkaz:
http://arxiv.org/abs/1506.08972
Publikováno v:
Reviews of Modern Physics, 86, 669-716, 2014
Type-I clathrate compounds have attracted a great deal of interest in connection with the search for efficient thermoelectric materials. These compounds constitute networked cages consisting of nano-scale tetrakaidecahedrons (14 hedrons) and dodecahe
Externí odkaz:
http://arxiv.org/abs/1402.5756
Publikováno v:
Phys. Rev. B 90, 125157 (2014)
We theoretically examine anisotropy of in-plane resistivity in the striped antiferromagnetic phase of an iron arsenide superconductor by applying a memory function approach to the ordered phase with isotropic nonmagnetic impurity. We find that the an
Externí odkaz:
http://arxiv.org/abs/1312.2322
Autor:
Tohyama, Takami, Ogura, Riku, Yoshinaga, Kensuke, Naito, Shin, Miyakawa, Nobuaki, Kaneshita, Eiji
Publikováno v:
In Journal of Physics and Chemistry of Solids April 2019 127:252-257
Publikováno v:
Phys. Rev. B 87, 134418 (2013)
We theoretically investigate spin dynamics and $L_3$-edge resonant inelastic X-ray scattering (RIXS) of Chromium with commensurate spin-density wave (SDW) order, based on a multi-band Hubbard model composed of 3$d$ and 4$s$ orbitals. Obtaining the gr
Externí odkaz:
http://arxiv.org/abs/1211.1598
Autor:
Nomura, Takuji, Kaneshita, Eiji
Publikováno v:
J. Phys. Soc. Jpn. 81 (2012) 024707
We analyze theoretically the resonant inelastic x-ray scattering (RIXS) at the Ni K edge in the stripe-ordered state of La_{2-x}Sr_xNiO_4 at x=1/3. In the calculation of RIXS spectra, the stripe-ordered ground state is described within the Hartree-Fo
Externí odkaz:
http://arxiv.org/abs/1110.3141
Autor:
Nakayama, Tsuneyoshi, Kaneshita, Eiji
Publikováno v:
J. Phys. Soc. Jpn., Vol.80, 104604 (2011)
We show that the distinct differences of low-lying THz-frequency dynamics between type-I clathrates with on-center and off-center guest ions naturally follow from a theoretical model taking into account essential features of the dynamics of rattling
Externí odkaz:
http://arxiv.org/abs/1103.1441
Publikováno v:
Phys. Rev. Lett. 105, 037203 (2010)
We investigate Dirac fermions in the antifferomagnetic metallic state of iron-based superconduc- tors. Deriving an effective Hamiltonian for Dirac fermions, we reveal that there exist two Dirac cones carrying the same chirality, contrary to graphene,
Externí odkaz:
http://arxiv.org/abs/1003.5469