Zobrazeno 1 - 10
of 158
pro vyhledávání: '"OGURA, Daisuke"'
Publikováno v:
Phys. Rev. B 110, 054516 (2024)
One promising way to enhance superconductivity is to have coexisting wide and incipient narrow bands, where the Fermi level intersecting the wide band lies just above the narrow band, by which finite-energy spin fluctuations act as glue to mediate pa
Externí odkaz:
http://arxiv.org/abs/2408.10465
Autor:
Yamazaki, Kimihiro, Ochi, Masayuki, Ogura, Daisuke, Kuroki, Kazuhiko, Eisaki, Hiroshi, Uchida, Shinichi, Aoki, Hideo
Publikováno v:
Phys. Rev. Research 2, 033356 (2020)
For the recently discovered cuprate superconductor $\mathrm{Ba_{2}CuO_{3+\delta}}$, we propose a lattice structure which resembles the model considered by Lieb to represent the vastly oxygen-deficient material. We first investigate the stability of t
Externí odkaz:
http://arxiv.org/abs/2003.04015
Autor:
Yamamoto, Hideya, Ogura, Daisuke
Publikováno v:
In Journal of Building Engineering 1 October 2023 76
We study the spin-fluctuation-mediated $s\pm$-wave superconductivity in the bilayer Hubbard model with vertical and diagonal interlayer hoppings. As in the two-leg ladder model with diagonal hoppings, studied previously by the present authors, superc
Externí odkaz:
http://arxiv.org/abs/1912.11331
Publikováno v:
In Journal of Cultural Heritage May-June 2023 61:139-149
Akademický článek
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Autor:
Usui, Hidetomo, Ochi, Masayuki, Kitamura, Sota, Oka, Takashi, Ogura, Daisuke, Rosner, Helge, Haverkort, Maurits W., Sunko, Veronika, King, Philip D. C., Mackenzie, Andrew P., Kuroki, Kazuhiko
Publikováno v:
Phys. Rev. Materials 3, 045002 (2019)
We study the electronic structure of delafossite PtCoO$_2$ to elucidate its extremely small resistivity and high mobility. The band exhibits steep dispersion near the Fermi level despite the fact that it is formed mainly by Pt $d$ orbitals that are t
Externí odkaz:
http://arxiv.org/abs/1812.07213
Autor:
Ishikawa, Kazuki1 (AUTHOR) ishikawa.kazuki.75w@st.kyoto-u.ac.jp, Ogura, Daisuke1 (AUTHOR), Iba, Chiemi1 (AUTHOR), Takatori, Nobumitsu1 (AUTHOR), Wakiya, Soichiro2 (AUTHOR)
Publikováno v:
Heritage Science. 11/21/2023, Vol. 11 Issue 1, p1-15. 15p.
Publikováno v:
Phys. Rev. B 97, 014516 (2018)
We study superconductivity in the Hubbard model on various quasi-one-dimensional lattices with coexisting wide and narrow bands originating from multiple sites within a unit cell, where each site corresponds to a single orbital. The systems studied a
Externí odkaz:
http://arxiv.org/abs/1711.00592