Zobrazeno 1 - 10
of 536
pro vyhledávání: '"H. Kumigashira"'
Autor:
A. Honma, D. Takane, S. Souma, K. Yamauchi, Y. Wang, K. Nakayama, K. Sugawara, M. Kitamura, K. Horiba, H. Kumigashira, K. Tanaka, T. K. Kim, C. Cacho, T. Oguchi, T. Takahashi, Yoichi Ando, T. Sato
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)
Abstract Antiferromagnetic (AF) topological materials offer a fertile ground to explore a variety of quantum phenomena such as axion magnetoelectric dynamics and chiral Majorana fermions. To realize such intriguing states, it is essential to establis
Externí odkaz:
https://doaj.org/article/02cb517f2d824a20a115b454711e2fa9
Publikováno v:
APL Materials, Vol 11, Iss 5, Pp 051107-051107-5 (2023)
Layered oxides have been intensively studied due to their high degree of freedom in designing various electromagnetic properties and functionalities. While Bi-based layered supercell (LSC) compounds [BinOn+δ]-[MO2] (M = Mn, Mn/Al, Mn/Fe, or Mn/Ni; n
Externí odkaz:
https://doaj.org/article/fafb7bd52b2540f483a2efd3d9166d17
Autor:
R. Yukawa, M. Kobayashi, T. Kanda, D. Shiga, K. Yoshimatsu, S. Ishibashi, M. Minohara, M. Kitamura, K. Horiba, A. F. Santander-Syro, H. Kumigashira
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
The metal-insulator transition is typically controlled by carrier accumulation or chemical doping. Here, the authors realize an alternative method based on resonant tunnelling in a double quantum well structure of strongly correlated oxides, which of
Externí odkaz:
https://doaj.org/article/1c60148978ee42bba1b0405652b5a056
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-9 (2020)
Abstract Ti2O3 exhibits unique metal–insulator transition (MIT) at ~ 450 K over a wide temperature range of ~ 150 K. The close relationship between MIT and crystal deformation has been proposed. However, as physical properties are governed by the t
Externí odkaz:
https://doaj.org/article/baa44c2bc7f342ff94ee9c4fcb8a871e
Autor:
N. Mitsuishi, Y. Sugita, M. S. Bahramy, M. Kamitani, T. Sonobe, M. Sakano, T. Shimojima, H. Takahashi, H. Sakai, K. Horiba, H. Kumigashira, K. Taguchi, K. Miyamoto, T. Okuda, S. Ishiwata, Y. Motome, K. Ishizaka
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
Manipulating topological states by coupled electronic orders is promising for future dissipation-less electronic devices. Here, Mitsuishi et al. report selective vanishing of Dirac-type topological surface states by the formation of coupled charge de
Externí odkaz:
https://doaj.org/article/2fb9f77dc1584f9cb66f944e13024017
Autor:
D. Nishioka, T. Tsuchiya, W. Namiki, M. Takayanagi, K. Kawamura, T. Fujita, R. Yukawa, K. Horiba, H. Kumigashira, T. Higuchi
Publikováno v:
Nanoscale Research Letters, Vol 15, Iss 1, Pp 1-8 (2020)
Abstract Sm-doped CeO2-δ (Ce0.9Sm0.1O2-δ ; SDC) thin films were prepared on Al2O3 (0001) substrates by radio frequency magnetron sputtering. The prepared thin films were preferentially grown along the [111] direction, with the spacing of the (111)
Externí odkaz:
https://doaj.org/article/37c28902c57e4ffba6ef335db1a1659a
Autor:
K. Hagiwara, M. Ishikado, M. Horio, K. Koshiishi, S. Nakata, S. Ideta, K. Tanaka, K. Horiba, K. Ono, H. Kumigashira, T. Yoshida, S. Ishida, H. Eisaki, S. Shamoto, A. Fujimori
Publikováno v:
Physical Review Research, Vol 3, Iss 4, p 043151 (2021)
In order to study the possible superconductivity at the polar surfaces of 1111-type iron-based superconductors, which is doped with a large amount of holes in spite of the electron doping in bulk materials, we have performed angle-resolved photoemiss
Externí odkaz:
https://doaj.org/article/bc518c24635a48cbb3870e3dbfa4a325
Autor:
C. Lin, T. Adachi, M. Horio, T. Ohgi, M. A. Baqiya, T. Kawamata, H. Sato, T. Sumura, K. Koshiishi, S. Nakata, G. Shibata, K. Hagiwara, M. Suzuki, K. Ono, K. Horiba, H. Kumigashira, S. Ideta, K. Tanaka, Y. Koike, A. Fujimori
Publikováno v:
Physical Review Research, Vol 3, Iss 1, p 013180 (2021)
The electron-doped cuprates are usually characterized by a more robust antiferromagnetic phase and a much narrower superconducting (SC) dome than those of the hole-doped counterparts. Recently, bulk single crystals of Pr_{1.3−x}La_{0.7}Ce_{x}CuO_{4
Externí odkaz:
https://doaj.org/article/d4436e3d6f8844d6bb547a9dbab5c689
Publikováno v:
APL Materials, Vol 6, Iss 10, Pp 101101-101101-8 (2018)
We investigated electronic properties of Ti2O3 films with film thickness of ∼150 nm. The temperature dependence of resistivity indicated characteristic phase transitions. The insulator-to-metal transition (IMT) temperature (TIMT) deviated from bulk
Externí odkaz:
https://doaj.org/article/729440b2509740729f9cdf90aa8c26c5
Autor:
M. Horio, T. Adachi, Y. Mori, A. Takahashi, T. Yoshida, H. Suzuki, L. C. C. Ambolode, K. Okazaki, K. Ono, H. Kumigashira, H. Anzai, M. Arita, H. Namatame, M. Taniguchi, D. Ootsuki, K. Sawada, M. Takahashi, T. Mizokawa, Y. Koike, A. Fujimori
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-8 (2016)
In cuprates, superconductivity exists in a narrow window at high electron doping concentration with strong antiferromagnetic correlations. Here, the authors demonstrate superconductivity with no effect of antiferromagnetic order in a cuprate for a wi
Externí odkaz:
https://doaj.org/article/8e17dfc4721a4d669b77237258466d9b