Zobrazeno 1 - 10 of 84 pro vyhledávání: '"Jun Nara"'
1
Akademický článek
Structure and morphology of 2H-MoTe2 monolayer on GaAs(111)B grown by molecular-beam epitaxy
Autor: Akihiro Ohtake, Xu Yang, Jun Nara
Publikováno v: npj 2D Materials and Applications, Vol 6, Iss 1, Pp 1-7 (2022)
Abstract The structure and morphology of monolayer 2H-MoTe2 on GaAs(111)B grown by molecular-beam epitaxy have been studied using scanning tunneling microscopy, electron diffraction, and X-ray photoelectron spectroscopy. The MoTe2 film grown and anne
Externí odkaz: https://doaj.org/article/43c60eec1af34c58b53ef6b663438ce0
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2
Akademický článek
Repeatable and reproducible formation/rupture of oxygen vacancy filaments in the vicinity of a polycrystalline HfO2 surface
Autor: Sota Hida, Takumi Morita, Takahiro Yamasaki, Jun Nara, Takahisa Ohno, Kentaro Kinoshita
Publikováno v: AIP Advances, Vol 9, Iss 3, Pp 035309-035309-4 (2019)
We theoretically investigated the dynamics of oxygen vacancies (Vo’s) and the effect of changing their charge states by performing first-principles molecular dynamics simulations at a temperature of 1000 K. Calculations were performed for two struc
Externí odkaz: https://doaj.org/article/be6b8257bda04651af3e89a07247112b
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4
Angle Dependence of Interlayer Coupling in Twisted Transition Metal Dichalcogenide Heterobilayers
Autor: Takahisa Ohno, Vei Wang, Wen-Tong Geng, Jun Nara, Jing Lin
Publikováno v: The Journal of Physical Chemistry C. 125:1048-1053
We reveal by first-principles calculations that the interlayer binding in a twisted MoS2/MoTe2 heterobilayer decreases with the increasing twist angle, due to the increase of the interlayer overlap...
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fd0432c1c69b27fc4426704fdf757a33
https://doi.org/10.1021/acs.jpcc.0c09372
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7
Multi-axis decomposition of density functional program for strong scaling up to 82,944 nodes on the K computer: Compactly folded 3D-FFT communicators in the 6D torus network
Autor: Kazuo Minami, Takahisa Ohno, Junichiro Koga, Toshihiro Kato, Akiyoshi Kuroda, Tsuyoshi Uda, Takahiro Yamasaki, Jun Nara
Publikováno v: Computer Physics Communications. 244:264-276
Density functional calculations with a plane-wave basis set are widely used in materials science. Due to recent developments in high-performance computers, the number of nodes equipped in such computers greatly exceeds the number of atoms included in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4ed4468701f8ab15db3faf4aa5e2a930
https://doi.org/10.1016/j.cpc.2019.04.008
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9
Experimental and theoretical studies on atomic structures of the interface states at SiO2/4H-SiC(0001) interface
Autor: Yoshiyuki Yamashita, Jun Nara, Efi Dwi Indari, Takahiro Yamasaki, Takahisa Ohno, Ryu Hasunuma
Publikováno v: Journal of Applied Physics. 131:215303
We investigated the atomic structures of the interface states (gap states) at the SiO2/4H-SiC(0001) interface using hard x-ray photoelectron spectroscopy (HAXPES), operando hard x-ray photoelectron spectroscopy, extended x-ray absorption fine structu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d6bfcfb6ef0702668cbb86fbeb85b9b4
https://doi.org/10.1063/5.0093267
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