Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Murotani, Yuta"'
Publikováno v:
Nat Commun 15, 6310 (2024)
The manipulation of solid states using intense infrared or terahertz light fields is a pivotal area in contemporary ultrafast photonics research. While conventional circular polarization has been well explored, the potential of counterrotating bicirc
Externí odkaz:
http://arxiv.org/abs/2312.04768
Autor:
Murotani, Yuta, Kanda, Natsuki, Fujimoto, Tomohiro, Matsuda, Takuya, Goyal, Manik, Yoshinobu, Jun, Kobayashi, Yohei, Oka, Takashi, Stemmer, Susanne, Matsunaga, Ryusuke
Chirality of massless fermions emergent in condensed matter is a key to understand their characteristic behavior as well as to exploit their functionality. However, chiral nature of massless fermions in Dirac semimetals has remained elusive, due to e
Externí odkaz:
http://arxiv.org/abs/2310.01093
We demonstrated characterizing the electric field waveform of multi-terahertz pulses (10-50 THz) as vector quantities in the time domain by applying the polarization modulated electro-optic sampling (POMEOS) method. The problem of an ultrabroadband g
Externí odkaz:
http://arxiv.org/abs/2309.11675
Autor:
Fujimoto, Tomohiro, Kurihara, Takayuki, Murotani, Yuta, Tamaya, Tomohiro, Kanda, Natsuki, Kim, Changsu, Yoshinobu, Jun, Akiyama, Hidefumi, Kato, Takeo, Matsunaga, Ryusuke
Publikováno v:
Physical Review Letters 132, 016301 (2024)
We report the first observation of the spin Hall conductivity spectrum in GaAs at room temperature. Our terahertz polarimetry with a precision of several $\mu$rads resolves the Faraday rotation of terahertz pulses arising from the inverse spin Hall e
Externí odkaz:
http://arxiv.org/abs/2305.09155
Autor:
Murotani, Yuta, Kanda, Natsuki, Fujimoto, Tomohiro, Matsuda, Takuya, Goyal, Manik, Yoshinobu, Jun, Kobayashi, Yohei, Oka, Takashi, Stemmer, Susanne, Matsunaga, Ryusuke
Publikováno v:
Phys. Rev. Lett. 131, 096901 (2023)
We experimentally elucidate the origin of the anomalous Hall conductivity in a three-dimensional Dirac semimetal, Cd$_3$As$_2$, driven by circularly polarized light. Using time-resolved terahertz Faraday rotation spectroscopy, we determine the transi
Externí odkaz:
http://arxiv.org/abs/2211.02229
Autor:
Murotani, Yuta, Kanda, Natsuki, Ikeda, Tatsuhiko N., Matsuda, Takuya, Goyal, Manik, Yoshinobu, Jun, Kobayashi, Yohei, Stemmer, Susanne, Matsunaga, Ryusuke
Publikováno v:
Phys. Rev. Lett. 129, 207402 (2022)
Using broadband (12-45 THz) multi-terahertz spectroscopy, we show that stimulated Rayleigh scattering dominates the transient optical conductivity of cadmium arsenide, a Dirac semimetal, under an optical driving field at 30 THz. The characteristic di
Externí odkaz:
http://arxiv.org/abs/2112.13113
Autor:
Kanda, Natsuki, Murotani, Yuta, Matsuda, Takuya, Goyal, Manik, Salmani-Rezaie, Salva, Yoshinobu, Jun, Stemmer, Susanne, Matsunaga, Ryusuke
Publikováno v:
Nano Lett. 22, 2358 (2022)
The electromagnetic response of Dirac semimetals in the infrared and terahertz frequency ranges is attracting growing interest for potential applications in optoelectronics and nonlinear optics. The interplay between the free-carrier response and int
Externí odkaz:
http://arxiv.org/abs/2110.09689
Autor:
Murotani, Yuta, Shimano, Ryo
Publikováno v:
Phys. Rev. B 99, 224510 (2019)
In multiband superconductors, multiple collective modes exist associated with the multiple order parameters. Oscillations of the amplitude and the relative phase of the order parameters are called Higgs and Leggett modes, respectively. Recently, it h
Externí odkaz:
http://arxiv.org/abs/1902.01104
Akademický článek
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Autor:
Nakamura, Sachiko, Iida, Yudai, Murotani, Yuta, Matsunaga, Ryusuke, Terai, Hirotaka, Shimano, Ryo
Publikováno v:
Phys. Rev. Lett. 122, 257001 (2019)
Higgs mode in superconductors, i.e. the collective amplitude mode of the order parameter does not associate with charge nor spin fluctuations, therefore it does not couple to the electromagnetic field in the linear response regime. On the contrary to
Externí odkaz:
http://arxiv.org/abs/1809.10335