Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Kamada, Masahiro"'
Autor:
Ochi, Taisuke, Kamada, Masahiro, Yokosawa, Takamoto, Mukai, Kozo, Yoshinobu, Jun, Matsui, Tomohiro
Edge engineering is important for both fundamental research and applications as the device size decreases to nanometer scale. This is especially the case for graphene because a graphene edge shows totally different electronic properties depending on
Externí odkaz:
http://arxiv.org/abs/2210.17078
Autor:
Sasaki, Ken-ichi, Hitachi, Kenichi, Kamada, Masahiro, Yokosawa, Takamoto, Ochi, Taisuke, Matsui, Tomohiro
Publikováno v:
C 2024, 10(1), 18
Monolayer graphene absorbs 2.3 percent of the incident visible light. This 'small' absorption has been used to emphasize the visual transparency of graphene, but it in fact means that multilayer graphene absorbs a sizable fraction of incident light,
Externí odkaz:
http://arxiv.org/abs/2208.01311
Autor:
Yokosawa, Takamoto, Kamada, Masahiro, Ochi, Taisuke, Koga, Yuki, Takehara, Rin, Hara, Masahiro, Matsui, Tomohiro
Publikováno v:
e-J. Surf. Sci. Nanotechnol. 20, 139-144 (2022)
Graphene is attracting vast interest due to its superior electronic and mechanical properties. However, structure and electronic properties of its edge are often neglected, although they are important for nanoscale devices because the edge ratio beco
Externí odkaz:
http://arxiv.org/abs/2203.05155
Autor:
Kamada, Masahiro, Zeng, Weijun, Laitinen, Antti, Sarkar, Jayanta, Yeh, Sheng-Shiuan, Tappura, Kirsi, Seppä, Heikki, Hakonen, Pertti
Low frequency resistance variations due to mobility fluctuations is one of the key factors of $1/f$ noise in metallic conductors. According to theory, such noise in a two-dimensional (2D) device can be suppressed to zero at small magnetic fields, imp
Externí odkaz:
http://arxiv.org/abs/2112.11933
Autor:
Kamada, Masahiro, Laitinen, Antti, Zeng, Weijun, Will, Marco, Sarkar, Jayanta, Tappura, Kirsi, Seppä, Heikki, Hakonen, Pertti
Low-frequency $1/f^{\gamma}$ noise is ubiquitous, even in high-end electronic devices. For qubits such noise results in decrease of their coherence times. Recently, it was found that adsorbed O$_2$ molecules provide the dominant contribution to flux
Externí odkaz:
http://arxiv.org/abs/2106.12452
Autor:
Kamada, Masahiro, Gall, Vanessa, Sarkar, Jayanta, Kumar, Manohar, Laitinen, Antti, Gornyi, Igor, Hakonen, Pertti
Publikováno v:
Phys. Rev. B 104, 115432 (2021)
We have measured magnetoresistance of suspended graphene in the Corbino geometry at magnetic fields up to $B=0.15\,$T, i.e., in a regime uninfluenced by Shubnikov-de Haas oscillations. The low-temperature relative magnetotoresistance $[R(B)-R(0)]/R(0
Externí odkaz:
http://arxiv.org/abs/2105.03145
Autor:
Todoshchenko, Igor, Kamada, Masahiro, Kaikkonen, Jukka-Pekka, Liao, Yongping, Savin, Alexander, Will, Marco, Sergeicheva, Elena, Abhilash, Thanniyil Sebastian, Kauppinen, Esko, Hakonen, Pertti
Low dimensional fermionic quantum systems are exceptionally interesting because they reveal distinctive physical phenomena, including among others, topologically protected excitations, edge states, frustration, and fractionalization. Two-dimensional
Externí odkaz:
http://arxiv.org/abs/2010.13748
Autor:
Kamada, Masahiro1 (AUTHOR), Zeng, Weijun1,2 (AUTHOR), Laitinen, Antti1 (AUTHOR), Sarkar, Jayanta1 (AUTHOR), Yeh, Sheng-Shiuan3 (AUTHOR), Tappura, Kirsi4,5 (AUTHOR), Seppä, Heikki4 (AUTHOR), Hakonen, Pertti1,2 (AUTHOR) pertti.hakonen@aalto.fi
Publikováno v:
Communications Physics. 8/9/2023, Vol. 6 Issue 1, p1-6. 6p.
Autor:
Sasaki, Ken-ichi, Hitachi, Kenichi, Kamada, Masahiro, Yokosawa, Takamoto, Ochi, Taisuke, Matsui, Tomohiro
Publikováno v:
C; Mar2024, Vol. 10 Issue 1, p18, 18p
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