Zobrazeno 1 - 10
of 167
pro vyhledávání: '"Yukawa R"'
Autor:
Sato, Y., Fukaya, Y., Cameau, M., Kundu, A. K., Shiga, D., Yukawa, R., Horiba, K., Chen, C. -H., Huang, A., Jeng, H. -T., Ozaki, T., Kumigashira, H., Niibe, M., Matsuda, I.
Publikováno v:
Phys. Rev. Materials 4, 064005 (2020)
Electronic structure of the 3x3 ordered-phase of a silicon (Si) layer on Al(111) has been studied by angle resolved photoemission spectroscopy (ARPES) technique using synchrotron radiation and modeled by a trial atomic model. A closed Fermi surface o
Externí odkaz:
http://arxiv.org/abs/2005.05522
Autor:
Shiga, D., Yang, B. E., Hasegawa, N., Kanda, T., Tokunaga, R., Yoshimatsu, K., Yukawa, R., Kitamura, M., Horiba, K., Kumigashira, H.
Publikováno v:
Phys. Rev. B 102, 115114 (2020)
Through ${in~situ}$ photoemission spectroscopy, we investigated the change in the electronic and crystal structures of dimensionality-controlled VO$_2$ films coherently grown on TiO$_2$(001) substrates. In the nanostructured films, the balance betwee
Externí odkaz:
http://arxiv.org/abs/2005.00304
Autor:
Dai, J., Frantzeskakis, E., Fortuna, F., Lömker, P., Yukawa, R., Thees, M., Sengupta, S., Fèvre, P. Le, Bertran, F., Rault, J. E., Horiba, K., Müller, M., Kumigashira, H., Santander-Syro, A. F.
Publikováno v:
Physical Review B 101, 085121 (2020)
We report the observation of a two-dimensional electron system (2DES) at the $(110)$ surface of the transparent bulk insulator SnO$_2$, and the tunability of its carrier density by means of temperature or Eu deposition. The 2DES is insensitive to sur
Externí odkaz:
http://arxiv.org/abs/2002.06681
Autor:
Takeuchi, Y., Hobara, R., Akiyama, R., Takayama, A., Ichinokura, S., Yukawa, R., Matsuda, I., Hasegawa, S.
Publikováno v:
Phys. Rev. B 101, 085422 (2020)
We found that a surface state induced by hydrogenation on the surface of SrTiO$_{3}$(001) (STO) did not obey the rigid band model, which was confirmed by in situ electrical resistivity measurements in ultrahigh vacuum. With exposure of atomic hydroge
Externí odkaz:
http://arxiv.org/abs/1904.00539
Autor:
Kriener, M., Sakano, M., Kamitani, M., Bahramy, M. S., Yukawa, R., Horiba, K., Kumigashira, H., Ishizaka, K., Tokura, Y., Taguchi, Y.
Publikováno v:
Phys. Rev. Lett. 124, 047002 (2020)
GeTe is a chemically simple IV-VI semiconductor which bears a rich plethora of different physical properties induced by doping and external stimuli. These include, among others, ferromagnetism, ferroelectricity, phase-change memory functionality, and
Externí odkaz:
http://arxiv.org/abs/1901.08739
Autor:
Nakamura, T., Ohtsubo, Y., Yamashita, Y., Ideta, S., Tanaka, K., Yaji, K., Harasawa, A., Shin, S., Komori, F., Yukawa, R., Horiba, K., Kumigashira, H., Kimura, S.
Publikováno v:
Phys. Rev. B 98, 075431 (2018)
Electronic states on the Bi/InAs(110)-(2$\times$1) surface and its spin-polarized structure are revealed by angle-resolved photoelectron spectroscopy (ARPES), spin-resolved ARPES, and density-functional-theory calculation. The surface state showed qu
Externí odkaz:
http://arxiv.org/abs/1804.07012
Autor:
Ohtsubo, Y., Yamashita, Y., Hagiwara, K., Ideta, S., Tanaka, K., Yukawa, R., Horiba, K., Kumigashira, H., Miyamoto, K., Okuda, T., Hirano, W., Iga, F., Kimura, S.
Publikováno v:
Nature Communicationsvolume 10, Article number: 2298 (2019)
The peculiar metallic electronic states observed in the Kondo insulator, samarium hexaboride (SmB$_6$), has stimulated considerable attention among those studying non-trivial electronic phenomena. However, experimental studies of these states have le
Externí odkaz:
http://arxiv.org/abs/1803.09433
Autor:
Rödel, T. C., Dai, J., Fortuna, F., Frantzeskakis, E., Fèvre, P. Le, Bertran, F., Kobayashi, M., Yukawa, R., Mitsuhashi, T., Kitamura, M., Horiba, K., Kumigashira, H., Santander-Syro, A. F.
Publikováno v:
Phys. Rev. Materials 2, 051601 (2018)
We realize a two-dimensional electron system (2DES) in ZnO by simply depositing pure aluminum on its surface in ultra-high vacuum, and characterize its electronic structure using angle-resolved photoemission spectroscopy. The aluminum oxidizes into a
Externí odkaz:
http://arxiv.org/abs/1802.06907
Autor:
Chen, K. -W., Aryal, N., Dai, J., Graf, D., Zhang, S., Das, S., Fevre, P. Le, Bertran, F., Yukawa, R., Horiba, K., Kumigashira, H., Frantzeskakis, E., Fortuna, F., Balicas, L., Santander-Syro, A. F., Manousakis, E., Baumbach, R. E.
Publikováno v:
Phys. Rev. B 97, 165112 (2018)
We report the electronic band structures and concomitant Fermi surfaces for a family of exfoliable tetradymite compounds with the formula $T_2$$Ch_2$$Pn$, obtained as a modification to the well-known topological insulator binaries Bi$_2$(Se,Te)$_3$ b
Externí odkaz:
http://arxiv.org/abs/1711.04191
Publikováno v:
Phys. Rev. Lett. 115, 016801 (2015)
Circular dichroism (CD) observed by photoemission, being sensitive to the orbital and spin angular momenta of the electronic states, is a powerful probe of the nontrivial surface states of topological insulators, but the experimental results thus far
Externí odkaz:
http://arxiv.org/abs/1705.09720