Publications

    Selected Review Papers

    Endeavor of Iontronics: From Fundamentals to Applications of Ion-Controlled Electronics
    S. Z. Bisri, S. Shimizu, M. Nakano, Y. Iwasa
    Advanced Materials, 29, 1607054 (2017).

    Highly crystalline 2D superconductors
    Y. Saito, T. Nojima and Y. Iwasa
    Nature Reviews Materials, 2, 16094 (2016). [View Only]

    Gate-induced superconductivity in two-dimensional atomic crystals
    Y. Saito, T. Nojima, Y. Iwasa
    Superconductor Science and Technology, 29, 093001 (2016).

    2D crystals of transition metal dichalcogenide and their iontronic functionalities
    Y. J. Zhang, M. Yoshida, R. Suzuki, Y. Iwasa
    2D Materials, 2, 044004 (2015).

    Selected Original Papers

    Robustly protected carrier spin relaxation in electrostatically doped transition-metal dichalcogenides
    Y. J. Zhang, W. Shi, J. T. Ye, R. Suzuki, and Y. Iwasa
    Physical Review B, 95, 205302 (2017).

    Nonreciprocal charge transport in noncentrosymmetric superconductors
    R. Wakatsuki*, Y. Saito*, S. Hoshino, Y. M. Itahashi, T. Ideue, M. Ezawa, Y. Iwasa, N. Nagaosa (*equal contribution)
    Science Advances, 3, e1602390 (2017).

    Current switching of electronic structures in two-dimensional 1T-TaS2 crystals
    M. Yoshida, T. Gokuden, R. Suzuki, M. Nakano, and Y. Iwasa
    Physical Review B, 95, 121405 (2017).

    Bulk rectification effect in a polar semiconductor
    T. Ideue*, K. Hamamoto*, S. Koshikawa*, M. Ezawa, S. Shimizu, Y. Kaneko, Y. Tokura, N. Nagaosa & Y. Iwasa (*equal contribution)
    Nature Physics, AOP(2017).

    Superconductivity in a chiral nanotube
    F. Qin*, W. Shi*, T. Ideue, M. Yoshida, A. Zak, R. Tenne, T. Kikitsu, D. Inoue, D. Hashizume & Y. Iwasa (*equal contribution)
    Nature Communications, 8, 14465 (2017).

    Gate-tuned thermoelectric power in black phosphorus
    Y. Saito*, T. Iizuka*, T. Koretsune, R. Arita, S. Shimizu and Y. Iwasa (*equal contribution)
    Nano Letters, 16, 4819-4824 (2016).

    High circular polarization in electroluminescence from MoSe2
    M. Onga, Y. J. Zhang, R. Suzuki, Y. Iwasa
    Applied Physics Letters, 108, 073107 (2016).

    Gate-optimized thermoelectric power factor in ultrathin WSe2 single crystals
    M. Yoshida*, T. Iizuka*, Y. Saito, M. Onga, R. Suzuki, Y. J. Zhang, Y. Iwasa, S. Shimizu (*equal contribution)
    Nano Letters, 16, 2061-2065 (2016).

    Superconductivity protected by spin-valley locking in ion-gated MoS2
    Y. Saito, Y. Nakamura, M. S. Bahramy, Y. Kohama, J. T. Ye, Y. Kasahara, Y. Nakagawa, M. Onga, M. Tokunaga, T. Nojima, Y. Yanase, Y. Iwasa
    Nature Physics, 12, 144-149 (2016).

    Memristive phase switching in two-dimensional 1T-TaS2 crystals
    M. Yoshida, R. Suzuki, Y. J. Zhang, M. Nakano, Y. Iwasa
    Science Advances, 1, e1500606 (2015)

    Metallic ground state in an ion-gated two-dimensional superconductor
    Y. Saito, Y. Kasahara, J. T. Ye, Y. Iwasa, T. Nojima
    Science, 350, 409-413 (2015)

    Valley-dependent spin polarization in bulk MoS2 with broken inversion symmetry
    R. Suzuki*, M. Sakano*, Y. J. Zhang, R. Akashi, D. Morikawa, A. Harasawa, K. Yaji ,K. Kuroda, K. Miyamoto, T. Okuda, K. Ishizaka, R. Arita, Y. Iwasa (*equal contribution)
    Nature Nanotechnology, 9, 611-617 (2014)

    Electrically switchable chiral light-emitting transistor
    Y. J. Zhang, T. Oka, R. Suzuki, J. T. Ye, Y. Iwasa
    Science, 344, 725-728 (2014)

    Zeeman-type spin splitting controlled by an electric field
    H. T. Yuan, M. S. Bahramy, K. Morimoto, S. F. Wu, K. Nomura, B. J. Yang, H. Shimotani, R. Suzuki, M. Toh, C. Kloc, X. D. Xu, R. Arita, N. Nagaosa, Y. Iwasa
    Nature Physics, 9, 563-569 (2013)

    Superconducting dome in a gate-tuned band insulator
    J. T. Ye, Y. J. Zhang, R. Akashi, M. S. Bahramy, R. Arita, Y. Iwasa
    Science, 338, 1193-1196 (2012)

    Collective bulk carrier delocalization driven by electrostatic surface charge accumulation
    M. Nakano, K. Shibuya, D. Okuyama, T. Hatano, S. Ono, M. Kawasaki, Y. Iwasa, Y. Tokura
    Nature, 487, 459-462 (2012)

    Ambipolar MoS2 thin flake transistors
    Y. J. Zhang, J. T. Ye, Y. Matsuhashi, Y. Iwasa
    Nano Letters, 12, 1136-1140 (2012)

    2017

  1. Endeavor of Iontronics: From Fundamentals to Applications of Ion-Controlled Electronics
    S. Z. Bisri, S. Shimizu, M. Nakano, Y. Iwasa
    Advanced Materials, 29, 1607054 (2017).
  2. Robustly protected carrier spin relaxation in electrostatically doped transition-metal dichalcogenides
    Y. J. Zhang, W. Shi, J. T. Ye, R. Suzuki, and Y. Iwasa
    Physical Review B, 95, 205302 (2017).
  3. Nonreciprocal charge transport in noncentrosymmetric superconductors
    R. Wakatsuki*, Y. Saito*, S. Hoshino, Y. M. Itahashi, T. Ideue, M. Ezawa, Y. Iwasa, N. Nagaosa (*equal contribution)
    Science Advances, 3, e1602390 (2017).
  4. Current switching of electronic structures in two-dimensional 1T-TaS2 crystals
    M. Yoshida, T. Gokuden, R. Suzuki, M. Nakano, and Y. Iwasa
    Physical Review B, 95, 121405 (2017).
  5. Bulk rectification effect in a polar semiconductor
    T. Ideue*, K. Hamamoto*, S. Koshikawa*, M. Ezawa, S. Shimizu, Y. Kaneko, Y. Tokura, N. Nagaosa & Y. Iwasa (*equal contribution)
    Nature Physics, (2017).
  6. Superconductivity in a chiral nanotube
    F. Qin*, W. Shi*, T. Ideue, M. Yoshida, A. Zak, R. Tenne, T. Kikitsu, D. Inoue, D. Hashizume & Y. Iwasa (*equal contribution)
    Nature Communications, 8, 14465 (2017).
  7. Upper critical field reaches 90 tesla near the Mott transition in fulleride superconductors
    Y. Kasahara, Y. Takeuchi, R. H. Zadik, Y. Takabayashi, R. H. Colman, R. D. McDonald, M. J. Rosseinsky, K. Prassides & Y. Iwasa
    Nature Communications, 8, 14467 (2017).

    2016

  8. Highly crystalline 2D superconductors
    Y. Saito, T. Nojima and Y. Iwasa
    Nature Reviews Materials, 2, 16094 (2016). [View Only]
  9. Gate-tuned thermoelectric power in black phosphorus
    Y. Saito*, T. Iizuka*, T. Koretsune, R. Arita, S. Shimizu and Y. Iwasa (*equal contribution)
    Nano Letters, 16, 4819-4824 (2016).
  10. Gate-induced superconductivity in two-dimensional atomic crystals
    Y. Saito, T. Nojima, Y. Iwasa
    Superconductor Science and Technology, 29, 093001 (2016).
  11. Electrostatic and electrochemical tuning of superconductivity in two-dimensional NbSe2 crystals
    M. Yoshida, J. T. Ye, T. Nishizaki, N. Kobayashi, Y. Iwasa
    Applied Physics Letters, 108, 202602 (2016).
  12. High circular polarization in electroluminescence from MoSe2
    M. Onga, Y. J. Zhang, R. Suzuki, Y. Iwasa
    Applied Physics Letters, 108, 073107 (2016).
  13. Gate-Optimized Thermoelectric Power Factor in Ultrathin WSe2 Single Crystals
    M. Yoshida*, T. Iizuka*, Y. Saito, M. Onga, R. Suzuki, Y. J. Zhang, Y. Iwasa, S. Shimizu (*equal contribution)
    Nano Letters, 16, 2061-2065 (2016).
  14. Superconductivity protected by spin-valley locking in ion-gated MoS2
    Y. Saito, Y. Nakamura, M. S. Bahramy, Y. Kohama, J. T. Ye, Y. Kasahara, Y. Nakagawa, M. Onga, M. Tokunaga, T. Nojima, Y. Yanase, Y. Iwasa
    Nature Physics, 12, 144-149 (2016).
  15. Evolution of Insulator–Metal Phase Transitions in Epitaxial Tungsten Oxide Films during Electrolyte-Gating
    S. Nishihaya, M. Uchida, Y. Kozuka, Y. Iwasa, and M. Kawasaki
    ACS Appl. Mater. Interfaces, 8, 22330-22336 (2016)
  16. Thermoelectric Detection of Multi-Subband Density of States in Semiconducting and Metallic Single-Walled Carbon Nanotubes
    S. Shimizu, T. Iizuka, K. Kanahashi, J. Pu, K. Yanagi, T. Takenobu, Y. Iwasa
    SMALL, 12, 25, 3388-+ (2016)
  17. Enhanced thermopower in ZnO two-dimensional electron gas
    S. Shimizu, MS.Bahramy, MS.Bahramy, T. Iizuka, S. Ono, K. Miwa, Y. Tokura, Y. Iwasa
    PNAS, 113, 23, 6438-6443 (2016)
  18. Critical phenomena of emergent magnetic monopoles in a chiral magnet
    N. Kanazawa,Y. Nii, X. X. Zhang, A. S. Mishchenko, G. De Filippis, F. Kagawa,Y. Iwasa, N. Nagaosa, Y. Tokura
    Nature Communications, 7, 11622 (2016)
  19. Superconductivity protected by spin-valley locking in ion-gated MoS2
    Y. Saito, Y. Nakamura, M. S. Bahramy, Y. Kohama, J. T. Ye, Y. Kasahara, Y. Nakagawa, M. Onga, M. Tokunaga, T. Nojima, Y. Yanase, Y. Iwasa
    Nature Physics, 12, 144-149 (2016)
  20. 2015

  21. Single-Crystal-Like Organic Thin-Film Transistors Fabricated from Dinaphtho[2,3-b:2 ',3 '-f]thieno[3,2-b]thiophene (DNTT) Precursor-Polystyrene Blends
    A. Hamaguchi, T. Negishi, Y. Kimura, Y. Ikeda, K. Takimiya, S. Z. Bisri, Y. Iwasa, T. Shiro
    Advanced Materials, 27, 42, 6606 (2015)
  22. Optimized unconventional superconductivity in a molecular Jahn-Teller metal
    R. H. Zadik, Y. Takabayashi, G. Klupp, R. H. Colman, A. Y. Ganin, A. Potočnik, P. Jeglič, D. Arčon, P. Matus, K. Kamarás, Y. Kasahara, Y. Iwasa, A. N. Fitch, Y. Ohishi, G. Garbarino, K. Kato, M. J. Rosseinsky, K. Prassides
    Science Advances, 1, 3, e1500059 (2015)
  23. Metallic ground state in an ion-gated two-dimensional superconductor
    Y. Saito, Y. Kasahara, J. T. Ye, Y. Iwasa, T. Nojima
    Science, 350, 6259, 409-413 (2015)
  24. Direct Imaging of Nanoscale Conductance Evolution in Ion-Gel-Gated Oxide Transistors
    Yuan Ren, Hongtao Yuan, Xiaoyu Wu, Zhuoyu Chen, Yoshihiro Iwasa, Yi Cui, Harold Y. Hwang, and Keji Lai
    Nano Letters, 15, 7, 4730-4736 (2015)
  25. Uniaxial stress control of skyrmion phase
    Y. Nii, T. Nakajima, A. Kikkawa, Y. Yamasaki, K. Ohishi, J. Suzuki, Y. Taguchi, T. Arima, Y. Tokura, Y. Iwasa
    Nature Communications, 6, 8539 (2015)
  26. Memristive phase switching in two-dimensional 1T-TaS2 crystals
    M. Yoshida, R. Suzuki, Y. J. Zhang, M. Nakano, Y. Iwasa
    Science Advances, 1, 9, e1500606 (2015)
  27. Enhanced cryogenic thermopower in SrTiO3 by ionic gating
    S. Shimizu, S. Ono, T. Hatano, Y. Iwasa, Y. Tokura
    Physical Review B, 92, 16, 165304 (2015)
  28. Modulation of ferromagnetism in (In, Fe) As quantum wells via electrically controlled deformation of the electron wave functions
    L. D. Anh, P. N. Hai, Y. Kasahara, Y. Iwasa, M. Tanaka
    Physical Review B, 92, 16, 161201 (2015)
  29. Emergence of Multiple Superconducting Phases in (NH3)(y)MxFeSe (M: Na and Li)
    L. Zheng, X. Miao, Y. Sakai, M. Izumi,H. Goto, S. Nishiyama, E. Uesugi, Y. Kasahara, Y. Iwasa, Y. Kubozono
    Scientific Reports, 5, 12774 (2015)
  30. Superconductivity Series in Transition Metal Dichalcogenides by Ionic Gating
    W. Shi, J. Ye, Y. Zhang, R. Suzuki, M. Yoshida, J. Miyazaki, N. Inoue, Y. Saito, Y. Iwasa
    Scientific Reports, 5, 12534 (2015)
  31. Two-Dimensional Valley Electrons and Excitons in Noncentrosymmetric 3R-MoS2
    R. Akashi, M. Ochi, S. Bordacs, R. Suzuki, Y. Tokura, Y. Iwasa, R. Arita
    Physical Review Applied, 4, 1, 014002 (2015)
  32. Distinct Substrate Effect on the Reversibility of the Metal-Insulator Transitions in Electrolyte-Gated VO2 Thin Films
    M. Nakano, D. Okuyama, K. Shibuya,M. Mizumaki, H. Ohsumi, M. Yoshida, M. Takata, M. Kawasaki, Y. Tokura, T. Arima, Y. Iwasa
    Advanced Electronic Materials, 1, 7, 1500093 (2015)
  33. Direct Imaging of Nanoscale Conductance Evolution in Ion-Gel-Gated Oxide Transistors
    Y. Ren, H. Yuan, X. Wu, Z. Chen, Y. Iwasa, Y. Cui, H.Y. Hwang, K. Lai
    Nano Letters, 15, 7, 4730-4736 (2015)
  34. Large-area WSe2 electric double layer transistors on a plastic substrate
    K. Funahashi, J. Pu, M-Y. Li, L-J. Li, Y. Iwasa, T. Takenobu
    Japanese Journal of Applied Physics, 54, 6, 1, 06FF06 (2015)
  35. Ambipolar light-emitting organic single-crystal transistors with a grating resonator
    K. Maruyama, K. Sawabe, T. Sakanoue, J. P. Li, W. Takahashi, S. Hotta, Y. Iwasa, T. Takenobu
    Scientific Reports, 5, 10221 (2015)
  36. Ambipolar Insulator-to-Metal Transition in Black Phosphorus by Ionic-Liquid Gating
    Y. Saito, Y. Iwasa
    ACS NANO, 9, 3192-3198 (2015)
  37. 2014

  38. Elastic Stiffness of a Skyrmion Crystal
    Y. Nii, A. Kikkawa, Y. Taguchi, Y. Tokura, Y. Iwasa
    Physical Review Letters, 113, 267203 (2014)
  39. Controlling charge-density-wave states in nano-thick crystals of 1T-TaS2
    M. Yoshida, Y. J. Zhang, J. T. Ye, R. Suzuki, Y. Imai, S. Kimura, A. Fujiwara, Y. Iwasa
    Scientific Reports, 4, 7302 (2014)
  40. Gate tuning of anomalous Hall effect in ferromagnetic metal SrRuO3
    S. Shimizu, K. S. Takahashi, M. Kubota, M. Kawasaki, Y. Tokura, Y. Iwasa
    Applied Physics Letters, 105 (8), 163509 (2014)
  41. Valley-dependent spin polarization in bulk MoS2 with broken inversion symmetry
    R. Suzuki*, M. Sakano*, Y. J. Zhang, R. Akashi, D. Morikawa, A. Harasawa, K. Yaji, K. Kuroda, K. Miyamoto, T. Okuda, K. Ishizaka, R. Arita, Y. Iwasa (*equal contribution)
    Nature Nanotechnology, 9 (8), 611-617 (2014)
  42. Asymmetric Phase Transitions Observed at the Interface of a Field-Effect Transistor Based on an Organic Mott Insulator
    H. M. Yamamoto, Y. Kawasugi, H. Cui, M. Nakano, Y. Iwasa, R. Kato
    European Journal of Inorganic Chemistry, 24, 3841-3844 (2014)
  43. Spin frustration and magnetic ordering in the S=1/2 molecular antiferromagnet fcc-Cs3C60
    Y. Kasahara, Y. Takeuchi, T. Itou, R. H. Zadik, Y. Takabayashi, A. Y. Ganin, D. Arcon, M. J. Rosseinsky, K. Prassides, Y. Iwasa
    Physical Review B, 90 (1), 014413 (2014)
  44. Strong suppression of coherence effect and appearance of pseudogap in the layered nitride superconductor LixZrNCl: Zr-91- and N-15-NMR studies
    H. Kotegawa, S. Oshiro, Y. Shimizu, H. Tou, Y. Kasahara, T. Kishiume, Y. Taguchi, Y. Iwasa
    Physical Review B, 90 (2), 020503 (2014)
  45. Electric double layer transistors with ferroelectric BaTiO3 channels
    M. Ito, Y. Matsubara, Y. Kozuka, K. S. Takahashi, F. Kagawa, J. T. Ye, Y. Iwasa, K. Ueno, Y. Tokura, M. Kawasaki
    Applied Physics Letters, 104, 22 (2014)
  46. Continuous Band-Filling Control and One-Dimensional Transport in Metallic and Semiconducting Carbon Nanotube Tangled Films
    H. Shimotani, S. Tsuda, H. T. Yuan, Y. Yomogida, R. Moriya, T. Takenobu, K. Yanagi, Y. Iwasa
    Advanced Functional Materials, 24 (22), 3305-3311 (2014)
  47. Electrically Switchable Chiral Light-Emitting Transistor
    Y. J. Zhang, T. Oka, R. Suzuki, J. T. Ye, Y. Iwasa
    Science, 344 (6185), 725-728 (2014)
  48. Gate Control of Percolative Conduction in Strongly Correlated Manganite Films
    T. Hatano, Z. G. Sheng, M. Nakamura, M. Nakano, M. Kawasaki, Y. Iwasa, Y. Tokura
    Advanced Materials, 6 (18), 2874-2877 (2014)
  49. Transport Properties of Polymer Semiconductor Controlled by Ionic Liquid as a Gate Dielectric and a Pressure Medium
    W.Shi, J. T. Ye, J. G. Checkelsky, G. Joseph, C. Terakura, Y. Iwasa
    Advanced Functional Materials, 24 (14), 2005-2012 (2014)
  50. Field-Induced Superconductivity in Electric Double Layer Transistors
    K. Ueno, H. Shimotani, H. Yuan, J. T. Ye, M. Kawasaki, Y. Iwasa
    Journal of the Physical Society of JAPAN, 83 (3), 032001 (2014)
  51. Effective thickness of two-dimensional superconductivity in a tunable triangular quantum well of SrTiO3
    K. Ueno, T. Nojima, S. Yonezawa, M. Kawasaki, Y. Iwasa, Y. Maeno
    Physical Review B, 89 (2), 020508(2014)
  52. Gate-tunable gigantic lattice deformation in VO2
    D. Okuyama, M. Nakano, S. Takeshita, H. Ohsumi, S. Tardif, K. Shibuya, T. Hatano, H. Yumoto, T. Koyama, H. Ohashi, M. Takata, M. Kawasaki, T. Arima, Y. Tokura, Y. Iwasa
    Applied Physics Letters, 104 (2), 023507 (2014)
  53. Organic single-crystal light-emitting field-effect transistors
    S. Hotta, T. Yamao, S. Z. Bisri, T. Takenobu, Y. Iwasa,
    Journal of Materials Chemistry C, 2 (6), 965-980(2014)
  54. Large-Area Synthesis of Highly Crystalline WSe2 Mono layers and Device Applications
    J. K. Huang, J. Pu, C. L. Hsu, M. H. Chiu, Z. Y. Juang, Y. H. Chang, W. H. Chang, Y. Iwasa, T. Takenobu, L. J. Li,
    ACS Nano, 8 (1), 923-930 (2014)
  55. 2013

  56. Electrically Tunable Anomalous Hall Effect in Pt Thin Films
    S. Shimizu, K. S. Takahashi, T. Hatano, M. Kawasaki, Y. Tokura, Y. Iwasa
    Physical Review Letters, 111, 21 (2013)
  57. Multi-color light-emitting transistors composed of organic single crystals
    Y. Yomogida, H. Sakai, K. Sawabe, S. Gocho, S. Z. Bisri, H. Nakanotani, C. Adachi, T. Hosobe, Y. Iwasa, T. Takenobu
    Oraganic Electronics, 14(11), 2732-2742 (2013)
  58. Gate Control of Electronic Phases in a Quarter-Filled Manganite
    T. Hatano, Y. Ogimoto, N. Ogawa, M. Nakano, S. Ono, Y. Tomioka, K. Miyano, Y. Iwasa, Y. Tokura
    Scientific Reports, 3 (2013)
  59. Infrared-sensitive electrochromic device based on VO2
    M. Nakano, K. Shibuya, N. Ogawa, T. Hatano, M. Kawasaki, Y. Iwasa, Y. Tokura
    Applied Physiscs Letters, 103,15 (2013)
  60. Large modulation of zero-dimensional electronic states in quantum dots by electric-double-layer gating
    K. Shibata, H. T. Yuan, Y. Iwasa, K. Hirakawa,
    Nature Communications, 4 (2013)
  61. Zeeman-type spin splitting controlled by an electric field
    H. T. Yuan, M. S. Bahramy, K. Morimoto, S. F. Wu, K. Nomura, B. J. Yang, H. Shimotani, R. Suzuki, M. Toh, C. Kloc, X. D. Xu, R. Arita, N. Nagaosa, Y. Iwasa
    Nature Physics, 9 (9), 563-569 (2013)
  62. A strained organic field-effect transistor with a gate-tunable superconducting channel
    H. M. Yamamoto, M. Nakano, M. Suda, Y. Iwasa, M. Kawasaki, R. Kato,
    Nature Communications 4, 2379 (2013)
  63. Fabrication of stretchable MoS2 thin-film transistors using elastic ion-gel gate dielectrics
    J. Pu, Y.J. Zhang, Y. Wada, J. T. W. Wang, L. J. Li, Y. Iwasa, T. Takenobu,
    Applied Physics Letters 103, 023505(2013)
  64. Interface transport properties in ion-gated nano-sheets
    J.T. Ye, Y.J. Zhang, Y. Kasahara, Y. Iwasa,
    European Physical Journal-Special Topics 222, 1185-1201(2013)
  65. Formation of a Stable p-n Junction in a Liquid-Gated MoS2 Ambipolar Transistor
    Y. J. Zhang,J. T. Ye, Y. Yomogida, T. Takenobu, Y. Iwasa,
    Nano Letters 13, 3023-3028 (2013)
  66. Electrolyte-Gated SmCoO3 Thin-Film Transistors Exhibiting Thickness-Dependent Large Switching Ratio at Room Temperature
    P. H. Xiang, S. Asanuma, H. Yamada, H. Sato, I. H. Inoue, H. Akoh, A. Sawa, M. Kawasaki, Y. Iwasa,
    Advanced Materials, 25 (15), 2158-2161(2013)
  67. Two-dimensional magnetic interactions and magnetism of high-density charges in a polymer transistor
    M. Tsuji, Y. Takahashi, Y. Sakurai, Y. Yomogida, T. Takenobu, Y. Iwasa, K. Marumoto,
    Applied Physics Letters, 102 (13), 133301(2013)
  68. Electron Spin Resonance Study of Organic Interfaces in Ion Gel-Gated Rubrene Single-Crystal Transistors
    Y. Takahashi, M. Tsuji, Y. Yomogida, T. Takenobu, Y. Iwasa, K. Marumoto,
    Applied Physics Express, 6 (4), 041603(2013)
  69. 2012

  70. ELECTRONICS 'Cut and stick' ion gels
    M. Kawasaki, Y. Iwasa,
    Nature, 489(7417), 510-511(2012)
  71. Ambipolar organic single-crystal transistors based on ion gels
    Y. Yomogida, J. Pu, H. Shimotani, S. Ono, S. Hotta, Y. Iwasa, T. Takenobu,
    Advanced Materials, 24(32), 4392-4397(2012)
  72. Highly flexible MoS2 thin-film transistors with ion gel dielectrics
    J. Pu, Y. Yomogida, K. K. Liu, L. J. Li, Y. Iwasa, T. Takenobu,
    Nano Letters, 12(8), 4013-4017(2012)
  73. Superconducting Dome in a Gate-Tuned Band Insulator
    J. T. Ye, Y. J. Zhang, R. Akashi, M. S. Bahramy, R. Arita, Y. Iwasa,
    Science, 338(6111), 1193-1196(2012)
  74. External electric field dependence of the structure of the electric double layer at an ionic liquid/Au interface
    R. Yamamoto, H. Morisaki, O. Sakata, H. Shimotani, H. T. Yuan, Y. Iwasa, T. Kimura, Y. Wakabayashi,
    Applied Physics Letters, 101(5), 053122(2012)
  75. Gate control of surface transport in MBE-grown topological insulator (Bi1-xSbx)(2)Te-3 thin films
    S. Shimizu, R. Yoshimi, T. Hatano, K. S. Takahashi, A. Tsukazaki, M. Kawasaki, Y. Iwasa, Y. Tokura,
    Physical Review B, 86(4), 045319(2012)
  76. Collective bulk carrier delocalization driven by electrostatic surface charge accumulation
    M. Nakano, K. Shibuya, D. Okuyama, T. Hatano, S. Ono, M. Kawasaki, Y. Iwasa, Y. Tokura,
    Nature, 487(7408), 459-462(2012)
  77. Bulk superconductivity and fully gapped superconducting state in Ba-doped phenanthrene
    Y. Kasahara, Y. Takeuchi, Y. Iwasa,
    Physical Review B, 85(21), 214520(2012)
  78. Pressure effects on unoriented and oriented single-walled carbon nanotube films studied by infrared microscopy
    C. A. Kuntscher, A. Abouelsayed, K. Thirunavukkuarasu, F. Hennrich, Y. Iwasa,  
    Journal of Applied Physics, 111(11), 112614(2012)
  79. Tunable spin-orbit interaction in trilayer graphene exemplified in electric-double-layer transistors
    Z. Chen, H. T. Yuan, Y. Zhang, K. Nomura, T. Gao, Y. Gao, H. Shimotani, Z. F. Liu, Y. Iwasa,
    Nano Letters, 12(5), 2212-2216(2012)
  80. Ambipolar MoS2 thin flake transistors
    Y. J. Zhang, J. T. Ye, Y. Matsuhashi, Y. Iwasa,
    Nano Letters, 12(3), 1136-1140(2012)
  81. Electroresistance effect in gold thin film induced by ionic-liquid-gated electric double layer
    H. Nakayama, J. T. Ye, T. Ohtani, Y. Fujikawa, K. Ando, Y. Iwasa, E. Saitoh,
    Applied Physics Express, 5(2), 023002(2012)
  82. Emergent phenomena at oxide interfaces
    H. Y. Hwang, Y. Iwasa, M. Kawasaki, B. Keimer, N. Nagaosa, Y. Tokura,
    Nature Materials, 11(2), 103-113(2012)
  83. 2011

  84. Strain-mediated phase control and electrolyte-gating of electron-doped manganites
    P. X. Xiang, S. Asanuma, H. Yamada, I. H. Inoue, H. Sato, H. Akoh, A. Sawa, K. Ueno, H. T. Yuan, H. Shimotani, M. Kawasaki, Y. Iwasa,
    Advanced Materials, 23(48), 5822-5827(2011)
  85. Extraction of the contact resistance from the saturation region of rubrene single-crystal transistors
    M. Imakawa, K. Sawabe, Y. Yomogida, Y. Iwasa, T. Takenobu,
    Applied Physics Letters, 99(23), 233301(2011)
  86. Accessing the transport properties of graphene and its multilayers at high carrier density
    J. T. Ye, M. F. Craciun, M. Koshino, S. Russo, S. Inoue, H. T. Yuan, H. Shimotani, A. F. Morpurgo, Y. Iwasa,
    Proceedings of the National Academy of Sciences of the United States of America, 108(32), 13002-13006(2011)
  87. Electron spin resonance study of interface trap states and charge carrier concentration in rubrene single-crystal field-effect transistors
    M. Tsuji, N. Arai, K. Marumoto, J. Takeya, Y. Shimoi, H. Tanaka, S. Kuroda, T. Takenobu, Y. Iwasa,
    Applied Physics Express, 4(8), 085702(2011)
  88. Thermally and environmentally stable carrier doping using a solution method in carbon nanotube films
    Y. Sasaki, H. Okimoto, K. Yoshida, Y. Ono, Y. Iwasa, T. Takenobu,
    Applied Physics Express, 4(8), 085102(2011)
  89. Pulsed laser deposition and ionic liquid gate control of epitaxial Bi2Se3 thin films
    Y. Onose, R. Yoshimi, A. Tsukazaki, H. T. Yuan, T. Hidaka, Y. Iwasa, M. Kawasaki, Y. Tokura,
    Applied Physics Express, 4(8), 083001(2011)
  90. Hole reduction and electron accumulation in YBa2Cu3Oy thin films using an electrochemical technique: evidence for an n-type metallic state
    T. Nojima, H. Tada, S. Nakamura, N. Kobayashi, H. Shimotani, Y. Iwasa,
    Physical Review B, 84(2), 020502(2011)
  91. Discovery of superconductivity in KTaO3 by electrostatic carrier doping
    K. Ueno, S. Nakamura, H. Shimotani, H. T. Yuan, N. Kimura, T. Nojima, H. Aoki, Y. Iwasa, M. Kawasaki,
    Nature Nanotechnology, 6(7), 408-412(2011)
  92. Liquid-gated ambipolar transport in ultrathin films of a topological insulator Bi2Te3
    H. T. Yuan, H. W. Liu, H. Shimotani, H. Guo, M. W. Chen, Q. K. Xue, Y. Iwasa,
    Nano Letters, 11(7), 2601-2605(2011)
  93. p-i-n homojunction in organic light-emitting transistors
    S. Z. Bisri, T. Takenobu, K. Sawabe, S. Tsuda, Y. Yomogidao, T. Yamao, S. Hotta, C. Adachi, Y. Iwasa,
    Advanced Materials, 23(24), 2753-2758(2011)
  94. Electrically induced ferromagnetism at room temperature in cobalt-doped titanium dioxide
    Y. Yamada, K. Ueno, T. Fukumura, H. T. Yuan, H. Shimotani, Y. Iwasa, L. Gu, S. Tsukimoto, Y. Ikuhara, M. Kawasaki,  
    Science, 332(6033), 1065-1067(2011)
  95. Thermal variations of iodine nanostructures inside the channels of AlPO4-5 zeolite single crystals
    J. T. Ye, Y. Iwasa, Z. K. Tang,
    Physical Review B, 83(19), 193409(2011)
  96. Three-dimensional nanoporous gold for electrochemical supercapacitors
    X. Y. Lang, H.T. Yuan, Y. Iwasa, M. W. Chen,  
    Scripta Materialia, 64(9), 923-926(2011)
  97. Microscopic mechanisms behind the high mobility in rubrene single-crystal transistors as revealed by field-induced electron spin resonance
    K. Marumoto, N. Arai, H. Goto, M. Kijima, K. Murakami, Y. Tominari, J. Takeya, Y. Shimoi, H. Tanaka, S. Kuroda, T. Kaji, T.  Nishikawa, T. Takenobu, Y. Iwasa,
    Physical Review B, 83(7), 075302(2011)
  98. Doping variation of optical properties in ZrNCl superconductors
    T. Takano, Y. Kasahara, T. Oguchi, I. Hase, Y. Taguchi, Y. Iwasa,
    Journal of the Physical Society of Japan, 80(2), 023702(2011)
  99. Electric-field-induced superconductivity detected by magnetization measurements of an electric-double-layer capacitor
    Y. Kasahara, T. Nishijima, T. Sato, Y. Takeuchi, J. T. Ye, H. T. Yuan, H. Shimotani, Y. Iwasa,
    Journal of the Physical Society of Japan, 80(2), 023708(2011)
  100. Liquid-gated electric-double-layer transistor on layered metal dichalcogenide, SnS2
    H. T. Yuan, M. Toh, K. Morimoto, W. Tan, F. Wei, H. Shimotani, C. Kloc, Y. Iwasa,
    Applied Physics Letters, 98(1), 012102(2011)
  101. Raman spectroscopic study of the rare-earth fullerides Eu6-xSrxC60
    J. Arvanitidis, D. Christofilos, G. A. Kourouklis, A. Paloumpi, K. Papagelis, S. Ves, Y. Iwasa, K. Prassides,
    Nanoscale, 3(6), 2490-2493(2011)
  102. Enhancement of luminescence intensity in TMPY/perylene co-single crystals
    J. P. Li, S. Takaishi, N. Fujinuma, K. Endo, M. Yamashita, H. Matsuzaki, H. Okamoto, K. Sawabe, T. Takenobu, Y. Iwasa,
    Journal of Materials Chemistry, 21(44), 17662-17666(2011)
  103. High-pressure raman study of the Sm2.75C60 fulleride
    S. M. Souliou, J. Arvanitidis, D. Christofilos, K. Papagelis, S. Ves, G. A. Kourouklis, K. Prassides, Y. Iwasa, K. Syassen,
    High Pressure Research, 31(1), 13-17(2011)