Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Hiromasa NAMIKI"'
Publikováno v:
Electrochemistry, Vol 91, Iss 11, Pp 117003-117003 (2023)
Herein, we report a single-step mechanochemical synthesis of highly porous nitrogen-doped carbon and its electrocatalytic oxygen reduction activity. X-ray diffraction and X-ray photoelectron spectroscopy measurements revealed that solid–gas mechano
Externí odkaz:
https://doaj.org/article/186e05d8c4c34ec8b3602ff0a6274aef
Autor:
Yuki M. Itahashi, Toshiya Ideue, Shintaro Hoshino, Chihiro Goto, Hiromasa Namiki, Takao Sasagawa, Yoshihiro Iwasa
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-8 (2022)
Even-order nonlinear transport is a powerful probe of quantum materials, but such studies in superconductors have been limited to those which break time-reversal symmetry. Here, the authors observe second-order nonlinear transport in time-reversal-sy
Externí odkaz:
https://doaj.org/article/9d5cecb669324f3793e2f352b239d1c7
Publikováno v:
AIP Advances, Vol 11, Iss 7, Pp 075125-075125-6 (2021)
N-type argyrodite Ag8SnSe6 shows great potential as a novel thermoelectric material from room to middle temperatures. However, its thermoelectric properties cannot be manipulated because of the difficulty in controlling the carrier concentration by e
Externí odkaz:
https://doaj.org/article/821d629d36bc47308beb67333e06a51d
Autor:
Yuki Kimura, Yuichi Ota, Susumu Yonezawa, Ryotaro Mori, Masayuki Takashiri, Hiromasa Namiki, Hayato Yabuki
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-9 (2020)
Scientific Reports
Scientific Reports
To improve thermoelectric performance of materials, the utilization of low-dimensional materials with a multi-alloy system is a promising approach. We report on the enhanced thermoelectric properties of n-type Bi2(SexTe1−x)3 nanoplates using solvot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2dc0a802ef3067ed9afe6ef5b30b6be
http://link.springer.com/article/10.1038/s41598-020-63374-0
http://link.springer.com/article/10.1038/s41598-020-63374-0
Autor:
Zhenyu Wang, Cheng-Yi Huang, Chia-Hsiu Hsu, Hiromasa Namiki, Tay-Rong Chang, Feng-Chuan Chuang, Hsin Lin, Takao Sasagawa, Vidya Madhavan, Yoshinori Okada
Publikováno v:
Physical Review B. 105
A van der Waals coupled Weyl semimetal NbIrTe4 is investigated by combining scanning tunneling microscopy/spectroscopy and first-principles calculations. We observe a sharp peak in the tunneling conductance near the Fermi energy (E-F). Comparison wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::189a5b5da02ef3b4e683147adb542d57
https://doi.org/10.1103/physrevb.105.075110
https://doi.org/10.1103/physrevb.105.075110
Autor:
Yuki M. Itahashi, Toshiya Ideue, Shintaro Hoshino, Chihiro Goto, Hiromasa Namiki, Takao Sasagawa, Yoshihiro Iwasa
Publikováno v:
Nature communications. 13(1)
Nonreciprocal or even-order nonlinear responses in symmetry-broken systems are powerful probes of emergent properties in quantum materials, including superconductors, magnets, and topological materials. Recently, vortex matter has been recognized as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b5c0265107b42e2e4655e2d58a2263b
https://pubmed.ncbi.nlm.nih.gov/35351870
https://pubmed.ncbi.nlm.nih.gov/35351870
Autor:
Vidya Madhavan, Hiromasa Namiki, Zhenyu Wang, Keshav M. Dani, Vivek Pareek, Takao Sasagawa, Yoshinori Okada, Jorge Olivares
Publikováno v:
Physical Review B. 104
The Weyl semimetal $\mathrm{Mo}{\mathrm{Te}}_{2}$ offers a rare opportunity to study the interplay between Weyl physics and superconductivity. Recent studies have found that Se substitution can boost the superconductivity up to 1.5 K, but suppresses
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33478a8f347d391e5423f778968142b6
https://doi.org/10.1103/physrevb.104.115102
https://doi.org/10.1103/physrevb.104.115102
Publikováno v:
Physical Review Research. 2
This paper investigates the bulk rectification effect under out-of-plane magnetic field in a noncentrosymmetric three-dimensioanl superconductor PbTaSe${}_{2}$. The authors show a giant enhancement of the nonreciprocal magnetotransport during the sup
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bd9033df69020891c262d0eaa715e23
https://doi.org/10.1103/physrevresearch.2.042046
https://doi.org/10.1103/physrevresearch.2.042046
Autor:
Binghai Yan, Yiwei Li, Wujun Shi, Sandy Adhitia Ekahana, H. F. Yang, Yulin Chen, Changkang Chen, Yan Sun, Claudia Felser, Zhongkai Liu, Juan Jiang, Hiromasa Namiki, Ding Pei, Chaofan Zhang, Takao Sasagawa, L. X. Yang
Publikováno v:
Physical Review B. 102
Surface arcs (SAs) or Fermi arcs connecting pairs of bulk Weyl points with opposite chiralities are the signatures of Weyl semimetals in angle-resolved photoemission spectroscopy (ARPES) studies. The nontrivial topology of the bulk band structure gua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::603fb919df373e7e96c68a2e90d388d3
https://doi.org/10.1103/physrevb.102.085126
https://doi.org/10.1103/physrevb.102.085126
Publikováno v:
AIP Advances, Vol 11, Iss 7, Pp 075125-075125-6 (2021)
N-type argyrodite Ag8SnSe6 shows great potential as a novel thermoelectric material from room to middle temperatures. However, its thermoelectric properties cannot be manipulated because of the difficulty in controlling the carrier concentration by e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5823421ae30e9bd518850f21123e2ea
https://doi.org/10.1063/5.0056533
https://doi.org/10.1063/5.0056533