Zobrazeno 1 - 10
of 815
pro vyhledávání: '"Tamasaku K"'
Autor:
Nakagawa, K., Hariki, A., Okauchi, T., Fujiwara, H., Ahn, K. -H., Murakami, Y., Hamamoto, S., Kanai-Nakata, Y., Kadono, T., Higashiya, A., Tamasaku, K., Yabashi, M., Ishikawa, T., Sekiyama, A., Imada, S., Kuneš, J., Takase, K., Yamasaki, A.
We present Ir $4f$ core-level hard-x-ray photoemission spectroscopy (HAXPES) experiments conducted across antiferromagnetic (AFM) ordering transition in Ruddlesden-Popper iridates Sr$_2$IrO$_4$ and Sr$_3$Ir$_2$O$_7$. The Ir $4f$ spectra exhibit disti
Externí odkaz:
http://arxiv.org/abs/2404.12646
Autor:
Fujiwara, H., Nakatani, Y., Aratani, H., Kanai-Nakata, Y., Yamagami, K., Hamamoto, S., Kiss, T., Yamasaki, A., Higashiya, A., Imada, S., Tanaka, A., Tamasaku, K., Yabashi, M., Ishikawa, T., Yasui, A., Yamagami, H., Miyawaki, J., Miyake, A., Ebihara, T., Saitoh, Y., Sekiyama, A.
We report the ground-state symmetry of the Ce $4f$ states in the heavy fermion superconductor CeNi$_{2}$Ge$_{2}$, yielding anisotropic $cf$-hybridization between the Ce $4f$ states and conducting electrons. By analyzing linear dichroism in soft x-ray
Externí odkaz:
http://arxiv.org/abs/2308.00905
Autor:
Yamasaki, A., Oguni, T., Hayashida, T., Miyazaki, K., Tanaka, N., Nakagawa, K., Tamura, K., Mimura, K., Kawamura, N., Fujiwara, H., Nozue, G., Ose, A., Kanai-Nakata, Y., Higashiya, A., Hamamoto, S., Tamasaku, K., Yabashi, M., Ishikawa, T., Imada, S., Sekiyama, A., Sakata, H., Demura, S.
In this study, we investigate the bulk electronic structure of Pb-substituted LaO$_{0.5}$F$_{0.5}$BiS$_2$ single crystals, using two types of hard-x-ray spectroscopy. High-energy-resolution fluorescence-detected x-ray absorption spectroscopy revealed
Externí odkaz:
http://arxiv.org/abs/2305.19622
Autor:
Kubota, Y., Nabeshima, F., Nakayama, K., Ohsumi, H., Tanaka, Yoshikazu, Tamasaku, K., Suzuki, T., Okazaki, K., Sato, T., Maeda, A., Yabashi, M.
Lattice and electronic states of thin FeSe films on LaAlO$_3$ substrates are investigated in the vicinity of the nematic phase transition. No evidence of structural phase transition is found by x-ray diffraction below $T^\ast \sim 90$ K, while result
Externí odkaz:
http://arxiv.org/abs/2208.12384
Autor:
Jang, H., Song, S., Kihara, T., Liu, Y., Lee, S. -J., Park, S. -Y., Kim, M., Kim, H. -D., Coslovich, G., Nakata, S., Kubota, Y., Inoue, I., Tamasaku, K., Yabashi, M., Lee, H., Song, C., Nojiri, H., Keimer, B., Kao, C. -C., Lee, J. -S.
Publikováno v:
Sci. Adv. 8, eabk0832 (2022)
The normal state of high-Tc cuprates has been considered one of the essential topics in high-temperature superconductivity research. However, compared to the high magnetic fields study of it, understanding a photoinduced normal state remains elusive.
Externí odkaz:
http://arxiv.org/abs/2202.04784
Autor:
Kubota, Y., Tanaka, Yoshikazu, Togashi, T., Ebisu, T., Tamasaku, K., Osawa, H., Wada, T., Sugino, O., Matsuda, I., Yabashi, M.
Publikováno v:
Applied Physics Letters 122, 092201 (2023)
An ultrafast atomic motion of a photo-induced coherent phonon of bismuth at low temperatures was directly observed with time-resolved x-ray diffraction. A cryostat with a window that is transparent to both optical lasers and x-rays enabled versatile
Externí odkaz:
http://arxiv.org/abs/2105.13146
Publikováno v:
Phys. Rev. X 9, 031033 (2019)
We present the first experimental demonstration of quantum-enhanced detection at x-ray wavelengths. We show that x-ray pairs that are generated by spontaneous down-conversion can be used for the generation of heralded x-ray photons and measure direct
Externí odkaz:
http://arxiv.org/abs/1907.04045
Publikováno v:
Phys. Lett. B 782 (2018) 523-527
Axion Like Particles (ALPs) with a sub-keV range mass are searched by using the light-shining-through-a-wall technique. A novel system is developed in which injected X rays are converted and reconverted by the Laue-case conversion within a silicon si
Externí odkaz:
http://arxiv.org/abs/1802.08388
Autor:
Matsunami, M., Oura, M., Tamasaku, K., Ishikawa, T., Ideta, S., Tanaka, K., Takeuchi, T., Yamada, T., Tsai, A. P., Imura, K., Deguchi, K., Sato, N. K., Ishimasa, T.
Publikováno v:
Phys. Rev. B 96, 241102(R) (2017)
We study the electronic structure of Tsai-type cluster-based quasicrystalline approximants, Au$_{64}$Ge$_{22}$Yb$_{14}$ (AGY-I), Au$_{63.5}$Ge$_{20.5}$Yb$_{16}$ (AGY-II), and Zn$_{85.4}$Yb$_{14.6}$ (Zn-Yb), by means of photoemission spectroscopy. In
Externí odkaz:
http://arxiv.org/abs/1712.04113
Publikováno v:
Phys. Rev. D 96, 115001 (2017)
Single crystals have high atomic electric fields as much as 10^{11} V/m, which correspond to magnetic fields of \sim 10^3 T. These fields can be utilized to convert X rays into Axion Like Particles (ALPs) coherently similar to X-ray diffraction. In t
Externí odkaz:
http://arxiv.org/abs/1709.03299