Kosuke Nakayama

2022

Carrier Injection and Manipulation of Charge-Density Wave in Kagome Superconductor

Nakayama, K., Li, Y., Kato, T., Liu, M., Wang, Z., Takahashi, T., Yao, Y. & Sato, T., 2022 3月, In: Physical Review X. 12, 1, 011001.

研究成果: Article › 査読

Open Access

10 被引用数 (Scopus)

Development of a versatile micro-focused angle-resolved photoemission spectroscopy system with Kirkpatrick-Baez mirror optics

Kitamura, M., Souma, S., Honma, A., Wakabayashi, D., Tanaka, H., Toyoshima, A., Amemiya, K., Kawakami, T., Sugawara, K., Nakayama, K., Yoshimatsu, K., Kumigashira, H., Sato, T. & Horiba, K., 2022 3月 1, In: Review of Scientific Instruments. 93, 3, 033906.

研究成果: Article › 査読

6 被引用数 (Scopus)

Fermiology and Origin of Tc Enhancement in a Kagome Superconductor Cs (V1-xNbx)3Sb5

Kato, T., Li, Y., Nakayama, K., Wang, Z., Souma, S., Matsui, F., Kitamura, M., Horiba, K., Kumigashira, H., Takahashi, T., Yao, Y. & Sato, T., 2022 11月 11, In: Physical review letters. 129, 20, 206402.

研究成果: Article › 査読

3 被引用数 (Scopus)

Fermiology of a topological line-nodal compound CaSb2 and its implication to superconductivity: Angle-resolved photoemission study

Chuang, C. W., Souma, S., Moriya, A., Nakayama, K., Ikeda, A., Kawaguchi, M., Obata, K., Saha, S. R., Takahashi, H., Kitagawa, S., Ishida, K., Tanaka, K., Kitamura, M., Horiba, K., Kumigashira, H., Takahashi, T., Yonezawa, S., Paglione, J., Maeno, Y. & Sato, T., 2022 10月, In: Physical Review Materials. 6, 10, 104203.

研究成果: Article › 査読

1 被引用数 (Scopus)

Pb/Bi heterostructure as a versatile platform to realize topological superconductivity

Watanabe, I., Souma, S., Nakayama, K., Sugawara, K., Trang, C. X., Segawa, K., Yamauchi, K., Oguchi, T., Takahashi, T. & Sato, T., 2022 4月 1, In: Progress of Theoretical and Experimental Physics. 2022, 4, 04A103.

研究成果: Article › 査読

Open Access

1 被引用数 (Scopus)

Polarity-dependent charge density wave in the kagome superconductor CsV3Sb5

Kato, T., Li, Y., Nakayama, K., Wang, Z., Souma, S., Kitamura, M., Horiba, K., Kumigashira, H., Takahashi, T. & Sato, T., 2022 9月 15, In: Physical Review B. 106, 12, L121112.

研究成果: Article › 査読

Rhombic Fermi surfaces in a ferromagnetic MnGa thin film with perpendicular magnetic anisotropy

Kobayashi, M., Khang, N. H. D., Takeda, T., Araki, K., Okano, R., Suzuki, M., Kuroda, K., Yaji, K., Sugawara, K., Souma, S., Nakayama, K., Yamauchi, K., Kitamura, M., Horiba, K., Fujimori, A., Sato, T., Shin, S., Tanaka, M. & Hai, P. N., 2022 7月, In: Physical Review Materials. 6, 7, 074403.

研究成果: Article › 査読

Three-dimensional energy gap and origin of charge-density wave in kagome superconductor KV₃Sb₅

Kato, T., Li, Y., Kawakami, T., Liu, M., Nakayama, K., Wang, Z., Moriya, A., Tanaka, K., Takahashi, T., Yao, Y. & Sato, T., 2022 12月, In: Communications Materials. 3, 1, 30.

研究成果: Article › 査読

Open Access

2 被引用数 (Scopus)

2021

Dirac semimetal phase and switching of band inversion in XMg₂Bi₂ (X = Ba and Sr)

Takane, D., Kubota, Y., Nakayama, K., Kawakami, T., Yamauchi, K., Souma, S., Kato, T., Sugawara, K., Ideta, S. I., Tanaka, K., Kitamura, M., Horiba, K., Kumigashira, H., Oguchi, T., Takahashi, T., Segawa, K. & Sato, T., 2021 12月, In: Scientific reports. 11, 1, 21937.

研究成果: Article › 査読

Open Access

2 被引用数 (Scopus)

Multiple energy scales and anisotropic energy gap in the charge-density-wave phase of the kagome superconductor CsV3Sb5

Nakayama, K., Li, Y., Kato, T., Liu, M., Wang, Z., Takahashi, T., Yao, Y. & Sato, T., 2021 10月 15, In: Physical Review B. 104, 16, A83.

研究成果: Article › 査読

52 被引用数 (Scopus)

Orbital mixing at the onset of high-temperature superconductivity in FeSe1-xTex/CaF2

Nakayama, K., Tsubono, R., Phan, G. N., Nabeshima, F., Shikama, N., Ishikawa, T., Sakishita, Y., Ideta, S., Tanaka, K., Maeda, A., Takahashi, T. & Sato, T., 2021 1月 20, In: Physical Review Research. 3, 1, L012007.

研究成果: Article › 査読

Open Access

6 被引用数 (Scopus)

Unusual temperature evolution of quasiparticle band dispersion in electron-doped fese films

Nakayama, K., Shigekawa, K., Sugawara, K., Takahashi, T. & Sato, T., 2021 2月, In: Symmetry. 13, 2, p. 1-8 8 p., 155.

研究成果: Article › 査読

Open Access

2020

Conversion of a conventional superconductor into a topological superconductor by topological proximity effect

Trang, C. X., Shimamura, N., Nakayama, K., Souma, S., Sugawara, K., Watanabe, I., Yamauchi, K., Oguchi, T., Segawa, K., Takahashi, T., Ando, Y. & Sato, T., 2020 12月 1, In: Nature communications. 11, 1, 159.

研究成果: Article › 査読

Open Access

28 被引用数 (Scopus)

Observation of inverted band structure in the topological Dirac semimetal candidate CaAuAs

Nakayama, K., Wang, Z., Takane, D., Souma, S., Kubota, Y., Nakata, Y., Cacho, C., Kim, T., Ekahana, S. A., Shi, M., Kitamura, M., Horiba, K., Kumigashira, H., Takahashi, T., Ando, Y. & Sato, T., 2020 7月 15, In: Physical Review B. 102, 4, 041104.

研究成果: Article › 査読

7 被引用数 (Scopus)

Signature of band inversion in the antiferromagnetic phase of axion insulator candidate EuIn2As2

Sato, T., Wang, Z., Takane, D., Souma, S., Cui, C., Li, Y., Nakayama, K., Kawakami, T., Kubota, Y., Cacho, C., Kim, T. K., Arab, A., Strocov, V. N., Yao, Y. & Takahashi, T., 2020 9月, In: Physical Review Research. 2, 3, 033342.

研究成果: Article › 査読

Open Access

17 被引用数 (Scopus)

2019

Dichotomy of superconductivity between monolayer FeS and FeSe

Shigekawa, K., Nakayama, K., Kuno, M., Phan, G. N., Owada, K., Sugawara, K., Takahashi, T. & Sato, T., 2019 12月 3, In: Proceedings of the National Academy of Sciences of the United States of America. 116, 49, p. 24470-24474 5 p.

研究成果: Article › 査読

Open Access

14 被引用数 (Scopus)

Dimensionality reduction and band quantization induced by potassium intercalation in 1T-HfTe2

Nakata, Y., Sugawara, K., Chainani, A., Yamauchi, K., Nakayama, K., Souma, S., Chuang, P. Y., Cheng, C. M., Oguchi, T., Ueno, K., Takahashi, T. & Sato, T., 2019 7月 10, In: Physical Review Materials. 3, 7, 071001.

研究成果: Article › 査読

16 被引用数 (Scopus)

Electronic structure of a Bi2Te3/FeTe heterostructure: Implications for unconventional superconductivity

Owada, K., Nakayama, K., Tsubono, R., Shigekawa, K., Sugawara, K., Takahashi, T. & Sato, T., 2019 8月 21, In: Physical Review B. 100, 6, 064518.

研究成果: Article › 査読

Open Access

6 被引用数 (Scopus)

Evidence for bulk nodal loops and universality of Dirac-node arc surface states in ZrGeXc (Xc=S, Se, Te)

Nakamura, T., Souma, S., Wang, Z., Yamauchi, K., Takane, D., Oinuma, H., Nakayama, K., Horiba, K., Kumigashira, H., Oguchi, T., Takahashi, T., Ando, Y. & Sato, T., 2019 6月 4, In: Physical Review B. 99, 24, 245105.

研究成果: Article › 査読

Open Access

14 被引用数 (Scopus)

Monolayer VTe2: Incommensurate Fermi surface nesting and suppression of charge density waves

Sugawara, K., Nakata, Y., Fujii, K., Nakayama, K., Souma, S., Takahashi, T. & Sato, T., 2019 6月 18, In: Physical Review B. 99, 24, 241404.

研究成果: Article › 査読

29 被引用数 (Scopus)

Nanomosaic of Topological Dirac States on the Surface of Pb₅Bi₂₄Se₄₁ Observed by Nano-ARPES

Nakayama, K., Souma, S., Trang, C. X., Takane, D., Chen, C., Avila, J., Takahashi, T., Sasaki, S., Segawa, K., Asensio, M. C., Ando, Y. & Sato, T., 2019 6月 12, In: Nano Letters. 19, 6, p. 3737-3742 6 p.

研究成果: Article › 査読

5 被引用数 (Scopus)

Observation of Chiral Fermions with a Large Topological Charge and Associated Fermi-Arc Surface States in CoSi

Takane, D., Wang, Z., Souma, S., Nakayama, K., Nakamura, T., Oinuma, H., Nakata, Y., Iwasawa, H., Cacho, C., Kim, T., Horiba, K., Kumigashira, H., Takahashi, T., Ando, Y. & Sato, T., 2019 2月 20, In: Physical review letters. 122, 7, 076402.

研究成果: Article › 査読

152 被引用数 (Scopus)

Unusual change in the Dirac-cone energy band upon a two-step magnetic transition in CeBi

Oinuma, H., Souma, S., Nakayama, K., Horiba, K., Kumigashira, H., Yoshida, M., Ochiai, A., Takahashi, T. & Sato, T., 2019 9月 10, In: Physical Review B. 100, 12, 125122.

研究成果: Article › 査読

7 被引用数 (Scopus)

2018

Observation of a Dirac nodal line in AlB2

Takane, D., Souma, S., Nakayama, K., Nakamura, T., Oinuma, H., Hori, K., Horiba, K., Kumigashira, H., Kimura, N., Takahashi, T. & Sato, T., 2018 7月 17, In: Physical Review B. 98, 4, 041105.

研究成果: Article › 査読

20 被引用数 (Scopus)

Observation of band crossings protected by nonsymmorphic symmetry in the layered ternary telluride Ta3SiTe6

Sato, T., Wang, Z., Nakayama, K., Souma, S., Takane, D., Nakata, Y., Iwasawa, H., Cacho, C., Kim, T., Takahashi, T. & Ando, Y., 2018 9月 26, In: Physical Review B. 98, 12, 121111.

研究成果: Article › 査読

18 被引用数 (Scopus)

Observation of Dirac-like energy band and ring-torus Fermi surface associated with the nodal line in topological insulator CaAgAs

Takane, D., Nakayama, K., Souma, S., Wada, T., Okamoto, Y., Takenaka, K., Yamakawa, Y., Yamakage, A., Mitsuhashi, T., Horiba, K., Kumigashira, H., Takahashi, T. & Sato, T., 2018 12月 1, In: npj Quantum Materials. 3, 1, 1.

研究成果: Article › 査読

Open Access

56 被引用数 (Scopus)

Observation of Dirac-like energy band and unusual spectral line shape in quasi-one-dimensional superconductor Tl2Mo6Se6

Nakayama, K., Wang, Z., Trang, C. X., Souma, S., Rienks, E. D. L., Takahashi, T., Ando, Y. & Sato, T., 2018 10月 10, In: Physical Review B. 98, 14, 140502.

研究成果: Article › 査読

3 被引用数 (Scopus)

Ultrathin Bismuth Film on Higherature Cuprate Superconductor Bi₂Sr₂CaCu₂O_8+Î as a Candidate of a Topological Superconductor

Shimamura, N., Sugawara, K., Sucharitakul, S., Souma, S., Iwaya, K., Nakayama, K., Trang, C. X., Yamauchi, K., Oguchi, T., Kudo, K., Noji, T., Koike, Y., Takahashi, T., Hanaguri, T. & Sato, T., 2018 11月 27, In: ACS Nano. 12, 11, p. 10977-10983 7 p.

研究成果: Article › 査読

11 被引用数 (Scopus)

2017

Band splitting and Weyl nodes in trigonal tellurium studied by angle-resolved photoemission spectroscopy and density functional theory

Nakayama, K., Kuno, M., Yamauchi, K., Souma, S., Sugawara, K., Oguchi, T., Sato, T. & Takahashi, T., 2017 3月 22, In: Physical Review B. 95, 12, 125204.

研究成果: Article › 査読

48 被引用数 (Scopus)

Effects of strain on the electronic structure, superconductivity, and nematicity in FeSe studied by angle-resolved photoemission spectroscopy

Phan, G. N., Nakayama, K., Sugawara, K., Sato, T., Urata, T., Tanabe, Y., Tanigaki, K., Nabeshima, F., Imai, Y., Maeda, A. & Takahashi, T., 2017 6月 9, In: Physical Review B. 95, 22, 224507.

研究成果: Article › 査読

40 被引用数 (Scopus)

High-temperature superconductivity and lattice relaxation in lithium-deposited FeSe on SrTiO₃

Phan, G. N., Nakayama, K., Kanayama, S., Kuno, M., Sugawara, K., Sato, T. & Takahashi, T., 2017, In: journal of the physical society of japan. 86, 3, 033706.

研究成果: Article › 査読

6 被引用数 (Scopus)

Three-dimensional band structure of LaSb and CeSb: Absence of band inversion

Oinuma, H., Souma, S., Takane, D., Nakamura, T., Nakayama, K., Mitsuhashi, T., Horiba, K., Kumigashira, H., Yoshida, M., Ochiai, A., Takahashi, T. & Sato, T., 2017 7月 18, In: Physical Review B. 96, 4, 041120.

研究成果: Article › 査読

43 被引用数 (Scopus)

Two-dimensional Dirac semimetal phase in undoped one-monolayer FeSe film

Kanayama, S., Nakayama, K., Phan, G. N., Kuno, M., Sugawara, K., Takahashi, T. & Sato, T., 2017 12月 29, In: Physical Review B. 96, 22, 220509.

研究成果: Article › 査読

7 被引用数 (Scopus)

2016

Bulk superconducting gap of V₃Si studied by low-energy ultrahigh-resolution photoemission spectroscopy

Sato, T., Souma, S., Nakayama, K., Sugawara, K., Toyota, N. & Takahashi, T., 2016 4月 1, In: Journal of Electron Spectroscopy and Related Phenomena. 208, p. 40-42 3 p.

研究成果: Article › 査読

1 被引用数 (Scopus)

Dirac-node arc in the topological line-node semimetal HfSiS

Takane, D., Wang, Z., Souma, S., Nakayama, K., Trang, C. X., Sato, T., Takahashi, T. & Ando, Y., 2016 9月 8, In: Physical Review B. 94, 12, 121108.

研究成果: Article › 査読

118 被引用数 (Scopus)

Direct observation of nonequivalent Fermi-arc states of opposite surfaces in the noncentrosymmetric Weyl semimetal NbP

Souma, S., Wang, Z., Kotaka, H., Sato, T., Nakayama, K., Tanaka, Y., Kimizuka, H., Takahashi, T., Yamauchi, K., Oguchi, T., Segawa, K. & Ando, Y., 2016 4月 20, In: Physical Review B. 93, 16, 161112.

研究成果: Article › 査読

87 被引用数 (Scopus)

Fermiology of possible topological superconductor Tl0.5Bi2Te3 derived from hole-doped topological insulator

Trang, C. X., Wang, Z., Takane, D., Nakayama, K., Souma, S., Sato, T., Takahashi, T., Taskin, A. A. & Ando, Y., 2016 6月 13, In: Physical Review B. 93, 24, 241103.

研究成果: Article › 査読

7 被引用数 (Scopus)

2015

High-temperature superconductivity in potassium-coated multilayer FeSe thin films

Miyata, Y., Nakayama, K., Sugawara, K., Sato, T. & Takahashi, T., 2015 8月 28, In: Nature Materials. 14, 8, p. 775-779 5 p.

研究成果: Article › 査読

226 被引用数 (Scopus)

Observation of two-dimensional bulk electronic states in the superconducting topological insulator heterostructure Cux(PbSe) 5(Bi 2 Se 3) 6: Implications for unconventional superconductivity

Nakayama, K., Kimizuka, H., Tanaka, Y., Sato, T., Souma, S., Takahashi, T., Sasaki, S., Segawa, K. & Ando, Y., 2015 9月 28, In: Physical Review B - Condensed Matter and Materials Physics. 92, 10, 100508.

研究成果: Article › 査読

15 被引用数 (Scopus)

Superstructure-dependent electronic states in CaAlSi superconductors studied by angle-resolved photoemission spectroscopy

Sato, T., Xiao, Y. X., Souma, S., Nakayama, K., Sugawara, K., Kuroiwa, S., Akimitsu, J. & Takahashi, T., 2015 5月 11, In: Physical Review B - Condensed Matter and Materials Physics. 91, 19, 195114.

研究成果: Article › 査読

2 被引用数 (Scopus)

2014

Evolution from incoherent to coherent electronic states and its implications for superconductivity in FeTe1-x Sex

Ieki, E., Nakayama, K., Miyata, Y., Sato, T., Miao, H., Xu, N., Wang, X. P., Zhang, P., Qian, T., Richard, P., Xu, Z. J., Wen, J. S., Gu, G. D., Luo, H. Q., Wen, H. H., Ding, H. & Takahashi, T., 2014 4月 28, In: Physical Review B - Condensed Matter and Materials Physics. 89, 14, 140506.

研究成果: Article › 査読

32 被引用数 (Scopus)

Reconstruction of band structure induced by electronic nematicity in an fese superconductor

Nakayama, K., Miyata, Y., Phan, G. N., Sato, T., Tanabe, Y., Urata, T., Tanigaki, K. & Takahashi, T., 2014 12月 5, In: Physical review letters. 113, 23, 237001.

研究成果: Article › 査読

223 被引用数 (Scopus)

2013

Angle-resolved photoemission observation of isotropic superconducting gaps in isovalent Ru-substituted Ba(Fe_0.75Ru_0.25) ₂As₂

Xu, N., Richard, P., Wang, X. P., Shi, X., Van Roekeghem, A., Qian, T., Ieki, E., Nakayama, K., Sato, T., Rienks, E., Thirupathaiah, S., Xing, J., Wen, H. H., Shi, M., Takahashi, T. & Ding, H., 2013 3月 18, In: Physical Review B - Condensed Matter and Materials Physics. 87, 9, 094513.

研究成果: Article › 査読

10 被引用数 (Scopus)

Electronic structure of the iron chalcogenide KFeAgTe₂ revealed by angle-resolved photoemission spectroscopy

Ang, R., Nakayama, K., Yin, W. G., Sato, T., Lei, H., Petrovic, C. & Takahashi, T., 2013 10月 2, In: Physical Review B - Condensed Matter and Materials Physics. 88, 15, 155102.

研究成果: Article › 査読

5 被引用数 (Scopus)

Fermiology of the strongly spin-orbit coupled superconductor Sn _1-xIn_xTe: Implications for topological superconductivity

Sato, T., Tanaka, Y., Nakayama, K., Souma, S., Takahashi, T., Sasaki, S., Ren, Z., Taskin, A. A., Segawa, K. & Ando, Y., 2013 5月 17, In: Physical review letters. 110, 20, 206804.

研究成果: Article › 査読

75 被引用数 (Scopus)

Possible nodal superconducting gap and Lifshitz transition in heavily hole-doped Ba 0.1 K 0.9 Fe 2 As 2

Xu, N., Richard, P., Shi, X., Van Roekeghem, A., Qian, T., Razzoli, E., Rienks, E., Chen, G. F., Ieki, E., Nakayama, K., Sato, T., Takahashi, T., Shi, M. & Ding, H., 2013 1月 19, In: Physical Review B - Condensed Matter and Materials Physics. 88, 22, 220508.

研究成果: Article › 査読

77 被引用数 (Scopus)

Superconductivity and bandwidth-controlled Mott metal-insulator transition in 1T-TaS_2-xSe_x

Ang, R., Miyata, Y., Ieki, E., Nakayama, K., Sato, T., Liu, Y., Lu, W. J., Sun, Y. P. & Takahashi, T., 2013 9月 30, In: Physical Review B - Condensed Matter and Materials Physics. 88, 11, 115145.

研究成果: Article › 査読

64 被引用数 (Scopus)

Tunability of the k-space location of the Dirac cones in the topological crystalline insulator Pb_1-xSn_xTe

Tanaka, Y., Sato, T., Nakayama, K., Souma, S., Takahashi, T., Ren, Z., Novak, M., Segawa, K. & Ando, Y., 2013 4月 2, In: Physical Review B - Condensed Matter and Materials Physics. 87, 15, 155105.

研究成果: Article › 査読

105 被引用数 (Scopus)

Two types of Dirac-cone surface states on the (111) surface of the topological crystalline insulator SnTe

Tanaka, Y., Shoman, T., Nakayama, K., Souma, S., Sato, T., Takahashi, T., Novak, M., Segawa, K. & Ando, Y., 2013 12月 26, In: Physical Review B - Condensed Matter and Materials Physics. 88, 23, 235126.

研究成果: Article › 査読

93 被引用数 (Scopus)

2012

Angle-resolved photoemission spectroscopy of Co-based boride superconductor LaCo _1.73Fe _0.27B ₂

Nakayama, K., Ieki, E., Tanaka, Y., Sato, T., Takahashi, T., Kuroda, T., Mizoguchi, H., Kim, S. W. & Hosono, H., 2012 7月 5, In: Physical Review B - Condensed Matter and Materials Physics. 86, 1, 014503.

研究成果: Article › 査読

1 被引用数 (Scopus)

中山 耕輔

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中山耕輔