Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Yoji Kunihashi"'
Autor:
Takeshi Odagawa, Sota Yamamoto, Chaoliang Zhang, Kazuki Koyama, Jun Ishihara, Giacomo Mariani, Yoji Kunihashi, Haruki Sanada, Junsaku Nitta, Makoto Kohda
Publikováno v:
APL Materials, Vol 12, Iss 6, Pp 061120-061120-8 (2024)
We investigate the excitonic species in WS2 monolayers transferred onto III–V semiconductor substrates with different surface treatments. When the III–V substrates were covered with amorphous native oxides, negatively charged excitons dominated t
Externí odkaz:
https://doaj.org/article/980779194ccf47b1bd3d849c67024d7c
Autor:
Paul L. J. Helgers, James A. H. Stotz, Haruki Sanada, Yoji Kunihashi, Klaus Biermann, Paulo V. Santos
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-9 (2022)
Spin qubits are a platform for quantum computing. There are many advantages for quantum information processing if the spin qubit can move. Here, Helgers et al. use a surface acoustic wave to define a moving quantum dot and demonstrate the magneticfie
Externí odkaz:
https://doaj.org/article/09e17f6a74944a9f8b81e40601e8ce1d
Autor:
Yoji Kunihashi, Yasushi Shinohara, Sho Hasegawa, Hiroyuki Nishinaka, Masahiro Yoshimoto, Katsuya Oguri, Hideki Gotoh, Makoto Kohda, Junsaku Nitta, Haruki Sanada
Publikováno v:
Applied Physics Letters. 122
The incorporation of heavy atoms into semiconductor heterostructures is a promising way to enhance the spin–orbit interaction of carriers moving in two-dimensional channels. We investigated the strength of spin–orbit interaction in a sample conta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::676c768adc764a26b746f62b6cdee99a
https://doi.org/10.1063/5.0145496
https://doi.org/10.1063/5.0145496
Autor:
Takuya Okamoto, Yoji Kunihashi, Yasushi Shinohara, Haruki Sanada, Ming-Chang Chen, Katsuya Oguri
Publikováno v:
Optics Letters. 48:2579
We generate 1.7-cycle and 35-µJ pulses at a 1-MHz repetition rate by using two-stage multiple plate continuum compression of Yb-laser pulses with 80-W average input power. By adjusting the plate positions with careful consideration of the thermal le
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2f5df9c3f8da4c72d23248ee34e0f5a
https://doi.org/10.1364/ol.477372
https://doi.org/10.1364/ol.477372
Autor:
Koji Onomitsu, Yukio Tanaka, Hideki Gotoh, A. M. Stramma, Haruki Sanada, Makoto Kohda, Junsaku Nitta, Yoji Kunihashi, F. Tagarelli, Tetsuomi Sogawa
Publikováno v:
Communications Physics, Vol 3, Iss 1, Pp 1-7 (2020)
Conventional ways of confining charges in semiconductors employ advanced lithographic and crystal-growth techniques. The construction of micro/nano-scale structures is also essential for manipulating spins. However, existing techniques are not always
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cbdcfc006bc5a2563a91ab72f71fa39
http://link.springer.com/article/10.1038/s42005-020-0280-z
http://link.springer.com/article/10.1038/s42005-020-0280-z
Publikováno v:
The International Conference on Ultrafast Phenomena (UP) 2022.
This study reports on the high repetitive generation of three-cycle intense pulses with several tens of µJ at the reputation rate of 250 kHz by compressing Yb:KGW laser pulses with a multi-plate continuum method.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c4e500f2bebfc16aec8a38301471a40
https://doi.org/10.1364/up.2022.w4a.38
https://doi.org/10.1364/up.2022.w4a.38
Autor:
Yusuke Tanaka, Yoshiharu Krockenberger, Yoji Kunihashi, Haruki Sanada, Hiroo Omi, Hideki Gotoh, Katsuya Oguri
Publikováno v:
Applied Physics Express. 15:065502
We investigated the growth of Bi2Te3 thin films on (111) CaF2 and (111) BaF2 substrates by pulsed laser deposition. Stoichiometric Bi2Te3 thin films were grown using targets with excess tellurium. We adopted a combinatorial temperature variation prin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::456f9b95475ce151a90057ad772be7b4
https://doi.org/10.35848/1882-0786/ac6e27
https://doi.org/10.35848/1882-0786/ac6e27
Publikováno v:
Optics express. 28(2)
A highly sensitive method for detecting transient reflection in the extreme ultraviolet (XUV) region was developed on the basis of high-order harmonics for tracking carrier and coherent phonon dynamics. The use of lock-in detection and boxcar integra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::acb5e4fd2991d6b401a6b4ee4293d132
https://pubmed.ncbi.nlm.nih.gov/32121867
https://pubmed.ncbi.nlm.nih.gov/32121867
Publikováno v:
The 22nd International Conference on Ultrafast Phenomena 2020.
A highly sensitive method for measuring time-resolved reflection in extreme ultraviolet region was developed. We observed optical modulation ΔR/R~1×10-4 by boxcar integration and lock-in detection, and the data acquisition takes four minutes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcb8612ea8c4327ce3d36b9d2e516470
https://doi.org/10.1364/up.2020.tu3a.5
https://doi.org/10.1364/up.2020.tu3a.5
Autor:
Haruki Sanada, Yusuke Tanaka, Hideki Gotoh, Yoji Kunihashi, Koji Onomitsu, Tetsuomi Sogawa, Makoto Kohda, Junsaku Nitta
Publikováno v:
Spintronics XII.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c0f5fd2c76f553e0baf8634a3bfc545
https://doi.org/10.1117/12.2526911
https://doi.org/10.1117/12.2526911