Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Yagi, Ryuta"'
Autor:
Mukai, Fumiya, Horii, Kota, Hata, Nazuna, Ebisuoka, Ryoya, Watanabe, Kenji, Taniguchi, Takashi, Yagi, Ryuta
We have studied the dielectric screening of electric field which is induced by a gate voltage in twisted double bilayer graphene by using a sample with a mismatch angle of about 5 degrees. In low temperature magnetotransport measurements, quantum osc
Externí odkaz:
http://arxiv.org/abs/2108.02911
Autor:
Mukai, Fumiya, Horii, Kota, Ebisuoka, Ryoya, Watanabe, Kenji, Taniguchi, Takashi, Yagi, Ryuta
Most studies on moir\'e superlattices formed from a stack of h-BN and graphene have focused on single layer graphene; graphene with multiple layers is less understood. Here, we show that a moir\'e superlattice of multilayer graphene shows new feature
Externí odkaz:
http://arxiv.org/abs/2104.00261
Ballistic transport was studied in a multiple-band system consisting of an antidot lattice of AB-stacked trilayer graphene. The low temperature magnetoresistance showed commensurability peaks arising from matching of the antidot lattice period and ra
Externí odkaz:
http://arxiv.org/abs/1912.03833
Autor:
Horii, Kota, Nakasuga, Tomoaki, Hirahara, Taiki, Tajima, Shingo, Ebisuoka, Ryoya, Watanabe, Kenji, Taniguchi, Takashi, Yagi, Ryuta
Publikováno v:
Phys. Rev. B 100, 245420 (2019)
Landau levels of AB-stacked four- to six-layer graphene were studied experimentally in the presence of a perpendicular electric field. The Landau levels at a low magnetic field showed a characteristic structure that originated from the mini-Dirac con
Externí odkaz:
http://arxiv.org/abs/1906.06853
Autor:
Nakasuga, Tomoaki, Hirahara, Taiki, Horii, Kota, Ebisuoka, Ryoya, Tajima, Shingo, Watanabe, Kenji, Taniguchi, Takashi, Yagi, Ryuta
Publikováno v:
Phys. Rev. B 101, 035419 (2020)
The intrinsic resistance peak (ridge) structures were recently found to appear in the carrier density dependence plot of the resistance of the AB-stacked multilayer graphene with even numbers of layers.The ridges are due to topological changes in the
Externí odkaz:
http://arxiv.org/abs/1905.12193
Autor:
Oka, Takushi, Tajima, Shingo, Ebisuoka, Ryoya, Hirahara, Taiki, Watanabe, Kenji, Taniguchi, Takashi, Yagi, Ryuta
Monolayer graphene and bilayer graphene have strikingly different properties. One such difference is the shape of the Fermi surface. Although anisotropic band structures can be detected in optical measurements, they have so far been difficult to dete
Externí odkaz:
http://arxiv.org/abs/1901.06073
Autor:
Nakasuga, Tomoaki, Tajima, Shingo, Hirahara, Taiki, Ebisuoka, Ryoya, Oka, Takushi, Watanabe, Kenji, Taniguchi, Takashi, Yagi, Ryuta
Publikováno v:
Phys. Rev. B 99, 085404 (2019)
The low-energy band structure of Bernal-stacked hexlayer graphene was investigated by the measuring transport properties of high-mobility graphene samples equipped with a top and a bottom gate electrode at low temperature and in a magnetic field. By
Externí odkaz:
http://arxiv.org/abs/1810.02021
Autor:
Yagi, Ryuta, Hirahara, Taiki, Ebisuoka, Ryoya, Nakasuga, Tomoaki, Tajima, Shingo, Watanabe, Kenji, Taniguchi, Takashi
How atoms acquire three-dimensional bulk character is one of the fundamental questions in materials science. Before addressing this question, how atomic layers become a bulk crystal might give a hint to the answer. While atomically thin films have be
Externí odkaz:
http://arxiv.org/abs/1809.10306
Autor:
Hirahara, Taiki, Ebisuoka, Ryoya, Oka, Takushi, Nakasuga, Tomoaki, Tajima, Shingo, Watanabe, Kenji, Taniguchi, Takashi, Yagi, Ryuta
Since the advent of graphene, a variety of studies have been performed to elucidate its fundamental physics, or to explore its practical applications. Gate-tunable resistance is one of the most important properties of graphene and has been studied in
Externí odkaz:
http://arxiv.org/abs/1809.10311
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