Zobrazeno 1 - 10
of 224
pro vyhledávání: '"Takahiro Morimoto"'
Autor:
Makiko Ogino, Yoshihiro Okamura, Kosuke Fujiwara, Takahiro Morimoto, Naoto Nagaosa, Yoshio Kaneko, Yoshinori Tokura, Youtarou Takahashi
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-7 (2024)
Abstract Direct conversion from terahertz photon to charge current is a key phenomenon for terahertz photonics. Quantum geometrical description of optical processes in crystalline solids predicts existence of field-unbiased dc photocurrent arising fr
Externí odkaz:
https://doaj.org/article/c90e5aa2533f4865945135352762cd19
Publikováno v:
Communications Physics, Vol 7, Iss 1, Pp 1-10 (2024)
Abstract Periodically driven systems provide a novel route to control the topology of quantum materials. In particular, Floquet theory allows an effective band description of periodically-driven systems through the Floquet Hamiltonian. Here, we study
Externí odkaz:
https://doaj.org/article/618abe587ab342b5bd9539a1732bf153
Autor:
Ryo Mori, Kefeng Wang, Takahiro Morimoto, Samuel Ciocys, Jonathan D. Denlinger, Johnpierre Paglione, Alessandra Lanzara
Publikováno v:
Materials, Vol 15, Iss 8, p 2744 (2022)
A flat band structure in momentum space is considered key for the realization of novel phenomena. A topological flat band, also known as a drumhead state, is an ideal platform to drive new exotic topological quantum phases. Using angle-resolved photo
Externí odkaz:
https://doaj.org/article/3a107d9e83664c1d808fc03c13c57028
Autor:
Takayuki Watanabe, Satoshi Yamazaki, Satoshi Yamashita, Takumi Inaba, Shun Muroga, Takahiro Morimoto, Kazufumi Kobashi, Toshiya Okazaki
Publikováno v:
Nanomaterials, Vol 12, Iss 4, p 593 (2022)
A comprehensive characterization of various carbon nanotube (CNT) yarns provides insight for producing high-performance CNT yarns as well as a useful guide to select the proper yarn for a specific application. Herein we systematically investigate the
Externí odkaz:
https://doaj.org/article/4df6d9c8307246a99056e0dadfb448ae
Autor:
Takashi Tsuji, Guohai Chen, Takahiro Morimoto, Yoshiki Shimizu, Jaeho Kim, Hajime Sakakita, Kenji Hata, Shunsuke Sakurai, Kazufumi Kobashi, Don N. Futaba
Publikováno v:
Nanomaterials, Vol 11, Iss 12, p 3461 (2021)
We present a study quantitatively demonstrating that the method of synthesis (gas phase, fixed bed, non-fixed bed) represents a determining factor in the level of crystallinity in growing single wall carbon nanotubes (SWCNTs). Using far infrared spec
Externí odkaz:
https://doaj.org/article/8f8b8dc6c97a4baf9d5a0b1e84179ca4
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)
Photocurrent switches depend on circular polarization of the incident light. Here, De Juanet al. report a quantized circular photogalvanic effect as a measure of the topological charge of Weyl points in a class of Weyl semimetals and three-dimensiona
Externí odkaz:
https://doaj.org/article/cd95fdd527774b6cb63cb87b08625fdb
Publikováno v:
Physical Review X, Vol 6, Iss 4, p 041070 (2016)
We construct and classify chiral topological phases in driven (Floquet) systems of strongly interacting bosons, with finite-dimensional site Hilbert spaces, in two spatial dimensions. The construction proceeds by introducing exactly soluble models wi
Externí odkaz:
https://doaj.org/article/b97a9cc3eb2f40e1931cb87ffe395bda
Publikováno v:
Physical Review X, Vol 6, Iss 4, p 041001 (2016)
Periodic driving of a quantum system can enable new topological phases with no analog in static systems. In this paper, we systematically classify one-dimensional topological and symmetry-protected topological (SPT) phases in interacting fermionic an
Externí odkaz:
https://doaj.org/article/81a9079c442a4f4e8d9af6fec2599620
Autor:
Ryo Mori, Samuel Ciocys, Kazuaki Takasan, Ping Ai, Kayla Currier, Takahiro Morimoto, Joel E. Moore, Alessandra Lanzara
Publikováno v:
Nature. 614:249-255
Autor:
Minoru Kawamura, Masataka Mogi, Ryutaro Yoshimi, Takahiro Morimoto, Kei S. Takahashi, Atsushi Tsukazaki, Naoto Nagaosa, Masashi Kawasaki, Yoshinori Tokura
Publikováno v:
Nature Physics. 19:333-337