Akari Takayama

2022

Structure of χ3-Borophene Studied by Total-Reflection High-Energy Positron Diffraction (TRHEPD)

Tsujikawa, Y., Shoji, M., Hamada, M., Takeda, T., Mochizuki, I., Hyodo, T., Matsuda, I. & Takayama, A., 2022 7月 1, In: Molecules. 27, 13, 4219.

研究成果: Article › 査読

Open Access

Superconductivity near the saddle point in the two-dimensional Rashba system Si(111)- 3 × 3 -(Tl,Pb)

MacHida, T., Yoshimura, Y., Nakamura, T., Kohsaka, Y., Hanaguri, T., Hsing, C. R., Wei, C. M., Hasegawa, Y., Hasegawa, S. & Takayama, A., 2022 2月 1, In: Physical Review B. 105, 6, 064507.

研究成果: Article › 査読

1 被引用数 (Scopus)

2020

Controlling of the Dirac band states of Pb-deposited graphene by using work function difference

Tsujikawa, Y., Sakamoto, M., Yokoi, Y., Imamura, M., Takahashi, K., Hobara, R., Uchihashi, T. & Takayama, A., 2020 8月 1, In: AIP Advances. 10, 8, 085314.

研究成果: Article › 査読

2 被引用数 (Scopus)

Scattering of topological surface-state carriers at steps on surfaces

Fukui, N., Hobara, R., Takayama, A., Akiyama, R., Hirahara, T. & Hasegawa, S., 2020 9月, In: Physical Review B. 102, 11, 115418.

研究成果: Article › 査読

2 被引用数 (Scopus)

Structure of superconducting Ca-intercalated bilayer Graphene/SiC studied using total-reflection high-energy positron diffraction

Endo, Y., Fukaya, Y., Mochizuki, I., Takayama, A., Hyodo, T. & Hasegawa, S., 2020 2月, In: Carbon. 157, p. 857-862 6 p.

研究成果: Article › 査読

17 被引用数 (Scopus)

Superconducting proximity effect in a Rashba-Type surface state of Pb/Ge(111)

Huang, H., Toyama, H., Bondarenko, L. V., Tupchaya, A. Y., Gruznev, D. V., Takayama, A., Hobara, R., Akiyama, R., Zotov, A. V., Saranin, A. A. & Hasegawa, S., 2020 7月, In: Superconductor Science and Technology. 33, 7, 075007.

研究成果: Article › 査読

1 被引用数 (Scopus)

Two-dimensional conducting layer on the SrTi O3 surface induced by hydrogenation

Takeuchi, Y., Hobara, R., Akiyama, R., Takayama, A., Ichinokura, S., Yukawa, R., Matsuda, I. & Hasegawa, S., 2020 2月 15, In: Physical Review B. 101, 8, 085422.

研究成果: Article › 査読

2 被引用数 (Scopus)

2019

Superconducting single-atomic-layer Tl-Pb compounds on Ge(111) and Si(111) surfaces

Nakamura, T., Takayama, A., Hobara, R., Gruznev, D. V., Zotov, A. V., Saranin, A. A. & Hasegawa, S., 2019 6月 15, In: Applied Surface Science. 479, p. 679-684 6 p.

研究成果: Article › 査読

7 被引用数 (Scopus)

Vortex-induced quantum metallicity in the mono-unit-layer superconductor NbS e2

Ichinokura, S., Nakata, Y., Sugawara, K., Endo, Y., Takayama, A., Takahashi, T. & Hasegawa, S., 2019 6月 5, In: Physical Review B. 99, 22, 220501.

研究成果: Article › 査読

8 被引用数 (Scopus)

2018

Alkali-metal induced band structure deformation investigated by angle-resolved photoemission spectroscopy and first-principles calculations

Ito, S., Feng, B., Arita, M., Someya, T., Chen, W. C., Takayama, A., Iimori, T., Namatame, H., Taniguchi, M., Cheng, C. M., Tang, S. J., Komori, F. & Matsuda, I., 2018 4月 20, In: Physical Review B. 97, 15, 155423.

研究成果: Article › 査読

4 被引用数 (Scopus)

Thickness dependence of surface structure and superconductivity in Pb atomic layers

Toyama, H., Huang, H., Nakamura, T., Bondarenko, L. V., Tupchaya, A. Y., Gruznev, D. V., Takayama, A., Zotov, A. V., Saranin, A. A. & Hasegawa, S., 2018, In: journal of the physical society of japan. 87, 11, 113601.

研究成果: Article › 査読

1 被引用数 (Scopus)

Unconventional superconductivity in the single-atom-layer alloy Si(111)-√3×√3-(Tl, Pb)

Nakamura, T., Kim, H., Ichinokura, S., Takayama, A., Zotov, A. V., Saranin, A. A., Hasegawa, Y. & Hasegawa, S., 2018 10月 16, In: Physical Review B. 98, 13, 134505.

研究成果: Article › 査読

10 被引用数 (Scopus)

Weak localization in bilayer graphene with Li-intercalation/desorption

Endo, Y., Ichinokura, S., Akiyama, R., Takayama, A., Sugawara, K., Nomura, K., Takahashi, T. & Hasegawa, S., 2018 7月 2, In: Journal of Physics Condensed Matter. 30, 30, 305701.

研究成果: Article › 査読

4 被引用数 (Scopus)

2017

Anisotropic electronic band structure of intrinsic Si(110) studied by angle-resolved photoemission spectroscopy and first-principles calculations

Matsushita, S. Y., Takayama, A., Kawamoto, E., Hu, C., Hagiwara, S., Watanabe, K., Takahashi, T. & Suto, S., 2017 9月 14, In: Physical Review B. 96, 12, 125302.

研究成果: Article › 査読

3 被引用数 (Scopus)

Emergence of charge density waves and a pseudogap in single-layer TiTe₂

Chen, P., Pai, W. W., Chan, Y. H., Takayama, A., Xu, C. Z., Karn, A., Hasegawa, S., Chou, M. Y., Mo, S. K., Fedorov, A. V. & Chiang, T. C., 2017 12月 1, In: Nature communications. 8, 1, 516.

研究成果: Article › 査読

Open Access

72 被引用数 (Scopus)

Large-Gap Magnetic Topological Heterostructure Formed by Subsurface Incorporation of a Ferromagnetic Layer

Hirahara, T., Eremeev, S. V., Shirasawa, T., Okuyama, Y., Kubo, T., Nakanishi, R., Akiyama, R., Takayama, A., Hajiri, T., Ideta, S. I., Matsunami, M., Sumida, K., Miyamoto, K., Takagi, Y., Tanaka, K., Okuda, T., Yokoyama, T., Kimura, S. I., Hasegawa, S. & Chulkov, E. V., 2017 6月 14, In: Nano Letters. 17, 6, p. 3493-3500 8 p.

研究成果: Article › 査読

108 被引用数 (Scopus)

2016

Proving Nontrivial Topology of Pure Bismuth by Quantum Confinement

Ito, S., Feng, B., Arita, M., Takayama, A., Liu, R. Y., Someya, T., Chen, W. C., Iimori, T., Namatame, H., Taniguchi, M., Cheng, C. M., Tang, S. J., Komori, F., Kobayashi, K., Chiang, T. C. & Matsuda, I., 2016 12月 2, In: Physical Review Letters. 117, 23, 236402.

研究成果: Article › 査読

Open Access

61 被引用数 (Scopus)

Superconducting Calcium-Intercalated Bilayer Graphene

Ichinokura, S., Sugawara, K., Takayama, A., Takahashi, T. & Hasegawa, S., 2016 2月 23, In: ACS Nano. 10, 2, p. 2761-2765 5 p.

研究成果: Article › 査読

Open Access

173 被引用数 (Scopus)

2015

One-dimensional edge states with giant spin splitting in a bismuth thin film

Takayama, A., Sato, T., Souma, S., Oguchi, T. & Takahashi, T., 2015 2月 9, In: Physical Review Letters. 114, 6, 066402.

研究成果: Article › 査読

66 被引用数 (Scopus)

Rashba effect of bismuth thin film on silicon studied by spin-resolved ARPES

Takayama, A., Sato, T., Souma, S. & Takahashi, T., 2015 5月 1, In: Journal of Electron Spectroscopy and Related Phenomena. 201, p. 105-109 5 p.

研究成果: Article › 査読

3 被引用数 (Scopus)

Topological proximity effect in a topological insulator hybrid

Shoman, T., Takayama, A., Sato, T., Souma, S., Takahashi, T., Oguchi, T., Segawa, K. & Ando, Y., 2015 3月 12, In: Nature communications. 6, 6547.

研究成果: Article › 査読

Open Access

46 被引用数 (Scopus)

Two-Dimensional Superconductor with a Giant Rashba Effect: One-Atom-Layer Tl-Pb Compound on Si(111)

Matetskiy, A. V., Ichinokura, S., Bondarenko, L. V., Tupchaya, A. Y., Gruznev, D. V., Zotov, A. V., Saranin, A. A., Hobara, R., Takayama, A. & Hasegawa, S., 2015 10月 2, In: Physical Review Letters. 115, 14, 147003.

研究成果: Article › 査読

90 被引用数 (Scopus)

2014

Rashba effect in antimony and bismuth studied by spin-resolved ARPES

Takayama, A., Sato, T., Souma, S. & Takahashi, T., 2014 5月, In: New Journal of Physics. 16, 055004.

研究成果: Article › 査読

Open Access

24 被引用数 (Scopus)

Relationship between Fermi surface warping and out-of-plane spin polarization in topological insulators: A view from spin- and angle-resolved photoemission

Nomura, M., Souma, S., Takayama, A., Sato, T., Takahashi, T., Eto, K., Segawa, K. & Ando, Y., 2014 1月 27, In: Physical Review B - Condensed Matter and Materials Physics. 89, 4, 045134.

研究成果: Article › 査読

52 被引用数 (Scopus)

2012

Anomalous Rashba effect of bismuth(111) thin films studied by high-resolution spin- and angle-resolved photoemission spectroscopy

Takayama, A., Sato, T., Souma, S. & Takahashi, T., 2012 7月, In: Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics. 30, 4, 04E107.

研究成果: Article › 査読

4 被引用数 (Scopus)

Spin polarization of gapped dirac surface states near the topological phase transition in TlBi(S _1-xSe _x) ₂

Souma, S., Komatsu, M., Nomura, M., Sato, T., Takayama, A., Takahashi, T., Eto, K., Segawa, K. & Ando, Y., 2012 11月 2, In: Physical Review Letters. 109, 18, 186804.

研究成果: Article › 査読

41 被引用数 (Scopus)

Tunable spin polarization in bismuth ultrathin film on Si(111)

Takayama, A., Sato, T., Souma, S., Oguchi, T. & Takahashi, T., 2012 4月 11, In: Nano Letters. 12, 4, p. 1776-1779 4 p.

研究成果: Article › 査読

61 被引用数 (Scopus)

2011

Direct measurement of the out-of-plane spin texture in the dirac-cone surface state of a topological insulator

Souma, S., Kosaka, K., Sato, T., Komatsu, M., Takayama, A., Takahashi, T., Kriener, M., Segawa, K. & Ando, Y., 2011 5月 25, In: Physical Review Letters. 106, 21, 216803.

研究成果: Article › 査読

162 被引用数 (Scopus)

Evolution of surface states in Bi_1-xSb_x alloys across the topological phase transition

Guo, H., Sugawara, K., Takayama, A., Souma, S., Sato, T., Satoh, N., Ohnishi, A., Kitaura, M., Sasaki, M., Xue, Q. K. & Takahashi, T., 2011 5月 31, In: Physical Review B - Condensed Matter and Materials Physics. 83, 20, 201104.

研究成果: Article › 査読

34 被引用数 (Scopus)

Giant out-of-plane spin component and the asymmetry of spin polarization in surface rashba states of bismuth thin film

Takayama, A., Sato, T., Souma, S. & Takahashi, T., 2011 4月 19, In: Physical Review Letters. 106, 16, 166401.

研究成果: Article › 査読

81 被引用数 (Scopus)

2010

Ultrahigh-resolution spin-resolved photoemission spectrometer with a mini Mott detector

Souma, S., Takayama, A., Sugawara, K., Sato, T. & Takahashi, T., 2010 9月, In: Review of Scientific Instruments. 81, 9, 095101.

研究成果: Article › 査読

34 被引用数 (Scopus)

2009

Magnetic phase transition of CeSb studied by low-energy angle-resolved photoemission spectroscopy

Takayama, A., Souma, S., Sato, T., Arakane, T. & Takahashi, T., 2009 7月, In: journal of the physical society of japan. 78, 7, 073702.

研究成果: Article › 査読

16 被引用数 (Scopus)

2008

Observation of Fermi-surface-dependent nodeless superconducting gaps in Ba_0.6K_0.4Fe₂As₂

Ding, H., Richard, P., Nakayama, K., Sugawara, K., Arakane, T., Sekiba, Y., Takayama, A., Souma, S., Sato, T., Takahashi, T., Wang, Z., Dai, X., Fang, Z., Chen, G. F., Luo, J. L. & Wang, N. L., 2008 8月 1, In: EPL. 83, 4, 47001.

研究成果: Article › 査読

890 被引用数 (Scopus)

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