研究業績

発表論文

2017

  1. "Effects of strain on the electronic structure, superconductivity, and nematicity in FeSe studied by angle-resolved photoemission spectroscopy"
    Phys. Rev. B 95 (2017) 224507/1-6.
    G. N. Phan, K. Nakayama, K. Sugawara, T. Sato, T. Urata, Y. Tanabe, K. Tanigaki, F. Nabeshima, Y. Imai, A. Maeda, and T. Takahashi

  2. "Gradual Fermi-surface modification in orbitally ordered state of FeSe revealed by optical spectroscopy"
    Phys. Rev. B 95 (2017) 184502/1-5.
    M. Nakajima, K. Yanase, F. Nabeshima, Y. Imai, A. Maeda, and S. Tajima

  3. "Control of structural transition in FeSe1-xTex thin films by changing substrate materials"
    Sci. Rep. 7 (2017) 46653/1-6.
    Yoshinori Imai, Yuichi Sawada, Fuyuki Nabeshima, Daisuke Asami, Masataka Kawai, and Atsutaka Maeda

  4. "Growth and transport properties of FeSe/FeTe superlattice thin films"
    Jpn. J. Appl. Phys. 56 (2017) 020308/1-4.
    Fuyuki Nabeshima, Yoshinori Imai, Ataru Ichinose, Ichiro Tsukada, and Atsutaka Maeda

2016

  1. "Transport properties of FeSe1-xTex thin films under magnetic fields up to 8 T"
    Physica C 530 (2016) 27-30.
    Y. Sawada, F. Nabeshima, D. Asami, R. Ogawa, Y. Imai, A. Maeda

  2. "Superconducting properties of FeSe1-xTex films with x=0-0.4"
    Physica C 530 (2016) 24-26.
    Y. Imai, Y. Sawada, D. Asami, F. Nabeshima, A. Maeda

  3. "Origin of lattice compression of FeSe1-xTex thin films on CaF2 substrates"
    AIP Advances 6 (2016) 095314/1-7.
    I. Tsukada, A. Ichinose, F. Nabeshima, Y. Imai, A. Maeda

  4. "Low-temperature-compatible tunneling-current-assisted scanning microwave microscope utilizing a rigid coaxial resonator"
    Rev. Sci. Instrum. 87 (2016) 063706/1-6.
    H. Takahashi, Y. Imai, A. Maeda

  5. "Investigation of Transport Properties for FeSe1-xTex Thin Films under Magnetic Fields"
    J. Phys. Soc. Jpn. 85 (2016) 073703/1-4.
    Y. Sawada, F. Nabeshima, Y. Imai, A. Maeda
    ☞☞☞ Top 20 Most Downloaded Articles (June 2016)

  6. "Longitudinal and transverse thermoelectric transport in MnSi"
    Phys. Rev. B 93 (2016) 014436/1-5.
    Y. Hirokane, Y. Tomioka, Y. Imai, A. Maeda, Y. Onose

  7.   

2015

  1. "Suppression of phase separation and giant enhancement of
    superconducting transition temperature in FeSe1-xTex thin films"

    Proc. Natl. Acad. Sci. USA, 112 (2015) 1937-1940.
    Y. Imai, Y. Sawada, F. Nabeshima, A. Maeda

    ☞☞☞ ニュースリリース ☜☜☜

      "東京大学大学院総合文化研究科"   "科学技術振興機構 (JST)"

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  2. "Exceptional suppression of flux-flow resistivity in FeSe0.4Te0.6 by back-flow from excess Fe atoms and Se/Te substitutions"
    Phys. Rev. B 91 (2015) 054510/1-6.
    T. Okada, F. Nabeshima, H. Takahashi, Y. Imai, A. Maeda

  3. "Near-field microwave imaging of inhomogeneous KxFeySe2: Separation of topographic and electric features"
    Appl. Phys. Lett. 106 (2015) 233106/1-4.
    H. Takahashi, Y. Imai, A. Maeda

  4. "Observation of mesoscopic phase separation in KxFeySe2 by scanning microwave microscopy"
    Physica C, 518 (2015) 33-35.
    H. Takahashi, Y. Imai, A. Maeda

  5. "Gap Structure Seen in Magnetic Penetration Depth and Flux-Flow Resistivity of 122 Fe-Based Su- perconductors"
    Quantum Matter, 4 (2015) 308-313.
    A. Maeda, T. Okada, H. Takahashi, F. Nabeshima, Y. Imai, K. Kitagawa, K. Matsubayashi, Y. Uwatoko, M. Nakajima, A. Iyo, H. Eisaki

  6. "Crossover from hole- to electron-dominant regions in iron-chalcogenide superconductors induced by Te/Se substitution"
    Jpn. J. Appl. Phys. 54 (2015) 043102/1-5.
    I. Tsukada, F. Nabeshima, A. Ichinose, S. Komiya, M. Hanawa, Y. Imai, A. Maeda

  7.   

2014

  1. "Synthesis, characterization, Hall effect and THz conductivity of epitaxial thin films of Fe chalcogenide superconductors"
    Appl. Sur. Sci. 312 (2014) 43-49.
    A. Maeda, F. Nabeshima, H. Takahashi, T. Okada, Y. Imai, I. Tsukada, M. Hanawa, S. Komiya, A. Ichinose

  2. "Penetration depth and flux-flow resistivity measurements of BaFe2(As0.55P0.45)2 single crystals"
    Physica C 504 (2014) 24-27.
    T. Okada, Y. Imai, H. Takahashi, M. Nakajima, A. Iyo, H. Eisaki, A. Maeda

  3. "Induced lattice strain in epitaxial Fe-based superconducting films on CaF2 substrates: A comparative study of the microstructures of SmFeAs(O,F), Ba(Fe,Co)2As2, and FeTe0.5Se0.5"
    Appl. Phys. Lett. 104 (2014) 122603/1-5.
    A. Ichinose, I. Tsukada, F. Nabeshima, Y. Imai, A. Maeda, F. Kurth, B. Holzapfel, K. Iida, S. Ueda, M. Naito

  4. "Point-contact Andreev-reflection spectroscopy in Fe(Te,Se) films: multiband superconductivity and electron-boson coupling"
    Supercond. Sci. Technol. 27 (2014) 124014/1-8.
    D. Daghero, P. Pecchio, G. Ummarino, F. Nabeshima, Y. Imai, A. Maeda, I. Tsukada, S. Komiya, R. Gonnelli

  5.   

2013

  1. "Enhancement of the superconducting transition temperature in FeSe epitaxial thin films by anisotropic compression"
    Appl. Phys. Lett. 103 (2013) 172602/1-4.
    F. Nabeshima, Y. Imai, M. Hanawa, I. Tsukada, A. Maeda

  2. "Ultralow-Dissipative Conductivity by Dirac Fermions in BaFe2As2"
    J. Phys. Soc. Jpn. 82 (2013) 043709/1-4.
    Y. Imai, F. Nabeshima, D. Nakamura, T. Katase, H. Hiramatsu, H. Hosono, A. Maeda

  3. "Magnetic penetration depth and flux-flow resistivity measurements on NaFe0.97Co0.03As single crystals"
    Physica C 494 (2013) 109-112.
    T. Okada, H. Takahashi, Y. Imai, K. Kitagawa, K. Matsubayashi, Y. Uwatoko, A. Maeda

  4. "Low energy excitations inside the vortex core of LiFe(As, P) single crystals investigated by microwave-surface impedance"
    Physica C 484 (2013) 27-30.
    T. Okada, H. Takahashi, Y. Imai, K. Kitagawa, K. Matsubayashi, Y. Uwatoko, A. Maeda

  5. "Reproducible Synthetic Method for the Topological Superconductor CuxBi2Se3"
    J. Phys. Soc. Jpn. 82 (2013) 063702/1-4.
    R. Kondo, T. Yoshinaka, Y. Imai, A. Maeda

  6. "Effect of Vacuum Annealing on Superconductivity in Fe(Se,Te) Single Crystals"
    J. Phys. Soc. Jpn. 82 (2013) 064710/1-3.
    S. Komiya, M. Hanawa, I. Tsukada, A. Maeda

  7. "Microscopic analysis of the chemical reaction between Fe(Te, Se) thin films and underlying CaF2"
    Supercond. Sci. Technol. 26 (2013) 075002/1-10.
    A. Ichinose, F. Nabeshima, I. Tsukada, M. Hanawa, S. Komiya, T. Akiike, Y. Imai, A. Maeda

  8.   

2012

  1. "Superconductivity at 5.4 K in β-Bi2Pd"
    J. Phys. Soc. Jpn., 81 (2012) 113708/1-4.
    Y. Imai, F. Nabeshima, T. Yoshinaka, K. Miyatani, R. Kondo, S. Komiya, I. Tsukada, A. Maeda

  2. "Investigation of the superconducting gap structure in SrFe2(As0.7P0.3)2 studied by magnetic penetration depth and flux flow resistivity analysis"
    Phys. Rev. B, 86 (2012) 144525/1-5.
    H. Takahashi, T. Okada, Y. Imai, K. Kitagawa, K. Matsubayashi, Y. Uwatoko, A. Maeda

  3. "Microwave surface-impedance measurements of the electronic state and dissipation of magnetic vortices in superconducting LiFeAs single crystals"
    Phys. Rev. B, 86 (2012) 064516/1-5.
    T. Okada, H. Takahashi, Y. Imai, K. Kitagawa, K. Matsubayashi, Y. Uwatoko, A. Maeda

  4. "Superconducting Fluctuation Investigated by THz Conductivity of La2-xSrxCuO4 Thin Films"
    J. Phys. Soc. Jpn., 81 (2012) 044709/1-12.
    D. Nakamura, Y. Imai, A. Maeda, I. Tsukada

  5. "Effect of Co Impurities on Superconductivity of FeSe0.4Te0.6 single crystals"
    Japanese Journal of Applied Physics 51 (2012) 010102/1-4.
    F. Nabeshima, Y. Kobayashi, Y. Imai, I. Tsukada, A. Maeda

  6. "Empirical Selection Rule of Substrate Materials for Iron Chalcogenide Superconducting Thin Films"
    Japanese Journal of Applied Physics 51 (2012) 010104/1-6.
    M. Hanawa, A. Ichinose, S. Komiya, I. Tsukada, Y. Imai, A. Maeda

  7. "Co doping effects on superconductivity of FeSe0.4Te0.6 single crystals"
    Physics Procedia 27 (2012) 13-16.
    F. Nabeshima, Y. Kobayashi, Y. Imai, I. Tsukada, A. Maeda

2011

  1. "Anomalous Temperature Dependence of the Superfluid Density Caused by Dirty-to-Clean Crossover in FeSe0.4Te0.6 Single Crystals";
    Physical Review B, 84 (2011) 132503/1-5.
    H. Takahashi, Y. Imai, S. Komiya, I. Tsukada, A. Maeda
  2. "Microwave Surface Impedance Measurements of LiFeAs Single Crystals";
    J. Phys. Soc. Jpn., 80 (2011) 013704/1-4.
    Y. Imai, H. Takahashi, K. Kitagawa, K. Matsubayashi, N. Nakai, Y. Nagai, Y. Uwatoko, M. Machida, A. Maeda
    ☞☞☞ Most Cited Articles in 2012 from Vol. 80 (2011)
  3. "Microwave Surface Impedance Measurements of LiFeAs, LiFe(As,P) and FeSe1-xTex Single Crystals";
    Physica C 471 (2011) 630-633.
    Y. Imai, H. Takahashi, T. Okada, T. Yoshinaka, S. Komiya, K. Kitagawa, K. Matsubayashi, I. Tsukada, Y. Uwatoko, A. Maeda
  4. "Terahertz Conductivity Measurement of FeSe0.5Te0.5 and Co-doped BaFe2As2 Thin Films";
    Physica C 471 (2011) 634-638.
    D. Nakamura, T. Akiike, H. Takahashi, F. Nabeshima, Y. Imai, A. Maeda, T. Katase, H. Hiramatsu, H. Hosono, S. Komiya, I. Tsukada
  5. "Anisotropic vortex pinning in the β-pyrochlore oxide superconductor KOs2O6";
    Physica C 471 (2011) 801-803.
    Y. Ishii, J. Yamaura, Y. Okamoto, A. Maeda, Z. Hiroi
  6. "Mobility analysis of FeTe thin films";
    J. Phys. Soc. Jpn., 80 (2011) 023712/1-4.
    I. Tsukada, M. Hanawa, S. Komiya, A. Ichinose, T. Akiike, Y. Imai, A. Maeda
  7. "Epitaxial Growth of FeSe0.5Te0.5 Thin Films on CaF2 Substrates with High Critical Current Density";
    Applied Physics Express 4 (2011) 053101/1-3.
    I. Tsukada, M. Hanawa, T. Akiike, F. Nabeshima, Y. Imai, A. Ichinose, S. Komiya, T. Hikage, T. Kawaguchi, H. Ikuta, A. Maeda
    ☞☞☞ Most Cited 10 Articles 2012
  8. "Substrate Dependence of Structural and Transport Properties in FeSe0.5Te0.5 Thin Films";
    Japanese Journal of Applied Physics 50 (2011) 053101/1-9.
    M. Hanawa, A. Ichinose, S. Komiya, I. Tsukada, T. Akiike, Y. Imai, T. Hikage, T. Kawaguchi, H. Ikuta, A. Maeda
  9. "Hall effect of FeTe and Fe(Se1-xTex) thin films";
    Physica C 471 (2011) 625-629.
    Hall effect of FeTe and Fe(Se1-xTex) thin films
    I. Tsukada, M. Hanawa, S. Komiya, A. Ichinose, T. Akiike, Y. Imai, A. Maeda

2010

  1. "Systematic Comparison of Eight Substrates in the Growth of FeSe0.5Te0.5 Superconducting Thin Films";
    Applied Physics Express 3 (2010) 043102/1-3.
    Y. Imai, T. Akiike, M. Hanawa, I. Tsukada, A. Ichinose, A. Maeda, T. Hikage, T. Kawaguchi, and H. Ikuta
    ☞☞☞ Most Cited 10 Articles 2011
  2. "Static friction as a function of waiting time probed by the dynamics of driven vortices in La2-xSrxCuO4 thin films ";
    ☞☞☞ IOP Select
    Journal of Physics: Condensed Matter 22 (2010) 445702.
    D. Nakamura, T. Kubo, S. Kitamura and A. Maeda
  3. "Superconductivity of FeSe0.5Te0.5 Thin Films Grown by Pulsed Laser Deposition";
    Japanese Journal of Applied Physics 49 (2010) 023101/1-5.
    Y. Imai, T. Akiike, R. Tanaka, H. Takahashi, M. Hanawa, I. Tsukada, A. Maeda
  4. "Hall effect in superconducting Fe(Se0.5Te0.5) thin films";
    Physical Review B 81 (2010) 054515/1-6.
    I. Tsukada, M. Hanawa, Seiki Komiya, T. Akiike, R. Tanaka, Y. Imai, and A. Maeda
  5. "THz conductivity of La2-xSrxCuO4 in the pseudogap region and in the superconductivity state";
    Physica C 470 (2010) 1018-1020.
    A. Maeda, D. Nakamura, Y. Shibuya, Y. Imai, I. Tsukada
  6. "Growth of superconducting FeSe0.5Te0.5 thin films by Pulsed Laser Deposition";
    Physica C 470 (2010) 1038-1041.
    Y. Imai, T. Akiike, R. Tanaka, H. Takahashi, M. Hanawa, I. Tsukada, A. Maeda
  7. "Experimental Studies to Realize Josephson Junctions and Qubits in Cuprate and Fe-based Superconductors";
    Journal of Superconductivity and Novel Magnetism 23 (2010) 775-779.
    A. Maeda, K. Ota, Y. Imai, D. Nakamura, R. Tanaka, H. Kitano, I. Tsukada, M. Hanawa, L. B. Gomez, K. Hamada, R. Takemura, M. Ohmaki, M. Suzuki, T. Machi, K. Tanabe
  8. "Superconducting fluctuation proved by time-domain THz spectroscopy of La1.85Sr0.15CuO4 thin film";
    Physica C 470 (2010) S47-S48.
    D. Nakamura, Y. Shibuya, Y. Imai, A. Maeda, I. Tsukada
  9. "Growth of thin Films FeSe1-xTex with PbO-type structure by pulsed laser deposition method";
    Physica C 470 (2010) S305-S306.
    Y. Imai, R. Tanaka, T. Akiike, H. Takahashi, M. Hanawa, I. Tsukada, A. Maeda
  10. "Rattling motion in β-pyrochlore compounds explored by the millimeter-wave conductivity measurement";
    Physica C 470 (2010) S699-S700.
    A. Maeda, K. Oba, Y. Imai, J. Yamaura, Z. Hiroi
  11. "Crossover from vortex-to-fluctuation picture in the vast vortex-liquid state of cuprate superconductors La2-xSrxCuO4 probed by microwave complex conductivity measurement technique";
    Physica C 470 (2010) S782-S783.
    A. Maeda, R. Tanaka, T. Ohashi, Y. Imai, H. Kitano, I. Tsukada
  12. "Switching-current distribution in underdoped La2-xSrxCuO4 intrinsic Josephson junctions";
    Physica C 470 (2010) S838-S839.
    H. Kitano, K. Ota, K. Ishikawa, M. Itoi, Y. Imai, A. Maeda

2009

  1. "Critical charge dynamics of superconducting La2-xSrxCuO4 thin films probed by complex microwave spectroscopy: Anomalous changes of the universality class by hole doping";
    T. Ohashi, H. Kitano, I. Tsukada, A. Maeda
    Physical Review B 79 (2009) 184507.

  2. "Comparative study of macroscopic quantum tunneling in Bi2Sr2CaCu2Oy intrinsic Josephson junctions with different device structures";
    K. Ota, K. Hamada, R. Takemura, M. Ohmaki, T. Machi, K. Tanabe, M. Suzuki, A. Maeda, and H. Kitano
    Physical Review B 79 (2009) 134505.

  3. "Comparison between the first- and the second-junction switchings in a small stack of Bi2Sr2CaCu2Oy intrinsic Josephson junctions";
    K. Ota, A. Maeda, T. Machi, K. Tanabe, and H. Kitano
    Journal of Physics: Conference Series 150 (2009) 052205.

  4. "Crossover between the classical friction and the nano-scale friction investigated by the transient dynamics of vortices in La2-xSrxCuO4 thin films";
    D. Nakamura, S. Kitamura, and A. Maeda
    Journal of Physics: Conference Series 150 (2009) 052181.

  5. "Crossover from supercnductivity fluctuation to vortex picture in the vortex state of high-Tc cuprate superconductors";
    A. Maeda, T. Ohashi, H. Kitano, R. Tanaka, Y. Imai, I. Tsukada, and M. Naito
    Journal of Physics: Conference Series 150 (2009) 052146.

  6. "Microwave spectroscopy of 3D-XY critical charge dynamics in electron-doped La2-xCexCuO4 superconducting thin films";
    H. Kitano, T. Ohashi, A. Maeda, A. Tsukada, and M. Naito
    Journal of Physics: Conference Series 150 (2009) 052111.

  7. "Macroscopic quantum tunneling and thermal activation in a small mesa structured Bi2Sr2CaCu2Oy intrinsic Josephson junctions";
    H. Kitano, K. Ota, K. Hamada, R. Takemura, M. Ohmaki, A. Maeda, and M. Suzuki
    Journal of Physics: Conference Series 150 (2009) 052110.

  8. "Recent Activities of the Physical Society of Japan for the Promotion of Gender Equality";
    A. Maeda, I. Yonenaga, S. Tajima, E. Hiyama, and E. Torikai
    AIP conference proceedings 1119 (2009) 227.

2008

  1. "Broadband method for precise microwave spectroscopy of superconducting thin films near the critical temperature";
    H. Kitano, T. Ohashi, and A. Maeda
    Review of Scientific Instruments 79 (2008) 074701.
  2. "Quasiparticle Electronic Structure of a New Surperconductor, Y2C3, in the Mixed State Investigated by Specific Heat and Flux-Flow Resistivity";
    S. Akutagawa, T. Ohashi, H. Kitano, A. Maeda, J. Goryo, H. Matsukawa, and J. Akimitsu
    Journal of the Physical Society of Japan 77 (2008) 064701.
  3. "Electrical Resistivity of Y2C3 Investigated by Microwave Surface Impedance Measurement";
    S. Akutagawa, T. Ohashi, H. Kitano, A. Maeda, and J. Akimitsu
    Journal of the Physical Society of Japan 77 (2008) 014702.
  4. "Challenges to high-Tc superconductivity in cuprates by exploring condensate properties ";
    A. Maeda
    Journal of Physics: Conference Series 108 (2008) 012002.

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