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2005 Fiscal Year Annual Research Report

カーボンおよび多軌道系の超伝導

Research Project

Project/Area Number 16076201
Research InstitutionTohoku University

Principal Investigator

齋藤 理一郎  東北大学, 大学院・理学研究科, 教授 (00178518)

Co-Investigator(Kenkyū-buntansha) 福山 秀敏  東北大学, 金属材料研究所, 教授 (10004441)
岩佐 義宏  東北大学, 金属材料研究所, 教授 (20184864)
佐々木 孝彦  東北大学, 金属材料研究所, 助教授 (20241565)
Keywordsカーボンナノチューブ / 発光分光 / モット絶縁体 / 電荷秩序 / 層状超伝導体 / インターカレーション / 赤外分光 / 電子相分離
Research Abstract

齋藤は、カーボンナノチューブの発光分光と共鳴ラマン分光の強度を計算するプログラムライブラリーを完成した。発光分光と共鳴ラマン分光の強度を螺旋度と直径の関数として求めた。実験と比較することにより、ナノチューブの存在比を知ることができるようになった。電子格子相互作用計算を利用して輸送における非弾性散乱過程の散乱長を定量的に評価した。
福山は、分子性結晶の電子物性、特にπ-d相互作用、関する理論的研究の更なる展開をおこなった。具体的には、フタロシアニンにおける1/4filledπ-電子系の電荷秩序と局在スピンの相互作用に起因する強磁性の可能性を指摘した。
岩佐は、層状超伝導体Li_<0.12>ZrNClの比熱測定を行い、本物質の電子比熱係数は同程度の超伝導臨界温度を有する物質群の中で最も小さいことを明らかにした。また、Li濃度xを変化させた一連の試料の作製に成功し、特に低ドープでは、x=0.05の試料まで連続的にドープできることを示した。さらにx=0.05付近で超伝導絶縁体転移が起こり、転移の直前では超伝導臨界温度が増大するという異常な振る舞いを見せることを明らかにした。
佐々木は、強相関系分子性伝導体のモット1次転移近傍において,マクロな金属-絶縁体電子相分離状態を放射光による走査型局所赤外反射スペクトル測定によって実空間画像化した。この相分離はモット1次転移に起因する電子系の過冷却により出現し,1次転移線の湾曲のために温度に対してリエントラントな出現,消失過程を経ることが明らかにした。

  • Research Products

    (71 results)

All 2006 2005 Other

All Journal Article (63 results) Book (5 results) Patent(Industrial Property Rights) (3 results)

  • [Journal Article] Photoluminescomce intensity of single-wall carbon nanotubes2006

    • Author(s)
      Y.Oyama
    • Journal Title

      Carbon 44

      Pages: 873-879

  • [Journal Article] Carbon nanotube population analysis from Raman and photoluminescence intensities2006

    • Author(s)
      A.Jorio
    • Journal Title

      Applied Physics Letters 88

      Pages: 023109-1-023109-3

  • [Journal Article] Superconductivity of InN2006

    • Author(s)
      T.Inushima
    • Journal Title

      Physica Status Solidi A-Applications and Materials Science 203(1)

      Pages: 80-84

  • [Journal Article] Contact resistance modulation in carbon nanotube devices investigated by four-probe experiments2006

    • Author(s)
      T.Kanbara
    • Journal Title

      Applied Physics Letters 88

      Pages: 053118

  • [Journal Article] Comment on "Large optical nonlinearty of semiconducting single-walled carbon nanotubes under resonant excitations"2006

    • Author(s)
      H.Okamoto
    • Journal Title

      Physical Review Letters 96(1)

      Pages: 019706

  • [Journal Article] High-performance transparent flexible transistors using carbon nanotube film2006

    • Author(s)
      T.Takenobu
    • Journal Title

      Applied Physics Letters 88(3)

      Pages: 033511

  • [Journal Article] Ambipolar organic field-effect transistors based on rubrene single crystals2006

    • Author(s)
      T.Takahashi
    • Journal Title

      Applied Physics Letters 88(3)

      Pages: 033505

  • [Journal Article] Effects of growth conditions on structure of organosilane monolayers on SiO2 substrates2006

    • Author(s)
      N.Yoshimoto
    • Journal Title

      Molecular Crystals and Liquid Crystals 445

      Pages: 49-55

  • [Journal Article] Gate capacitance in electrochemical transistor of single-walled carbon nanotube2006

    • Author(s)
      H.Shimotani
    • Journal Title

      Applied Physics Letters 88

      Pages: 073104

  • [Journal Article] Electronic Transport through Electron-Doped Metal Phthalocyanine Materials2006

    • Author(s)
      M.F.Craciun
    • Journal Title

      Advanced Materials 18

      Pages: 320-324

  • [Journal Article] Phonon-assisted excitonic recombination channels observed in DNA-wrapped carbon nanotubes using Photoluminescence spectroscopy2005

    • Author(s)
      S.G.Chou
    • Journal Title

      Physical Review Letters 94

      Pages: 127402-1-127402-4

  • [Journal Article] Local energy gap in deformed carbon nanotubes2005

    • Author(s)
      K.Sasaki
    • Journal Title

      Prog.Theor.Phys. 113

      Pages: 463-480

  • [Journal Article] Controlling edge states of zigzag carbon nanotubes by the Aharonov-Bohm flux2005

    • Author(s)
      K.Sasaki
    • Journal Title

      Physical Review B 71

      Pages: 195401-1-195401-5

  • [Journal Article] Intensity of the resonance Raman excitation spectra of single-wall carbon nanotubes2005

    • Author(s)
      J.Jiang
    • Journal Title

      Physical Review B 71

      Pages: 205420-1-205420-13

  • [Journal Article] Large-scale separation of metallic and semiconducting single-wall carbon nanotubes2005

    • Author(s)
      Y.Maeda
    • Journal Title

      Journal of The American Chemical Society. 127

      Pages: 10287-10290

  • [Journal Article] Recent Advances in Carbon Nanotube Photophysics2005

    • Author(s)
      M.S.Dresselhaus
    • Journal Title

      Physica E 29

      Pages: 443-446

  • [Journal Article] Quantum Decoherence in carbon nanotubes due to electron-phonon coupling2005

    • Author(s)
      S.Roche
    • Journal Title

      Physical Review Letters 95

      Pages: 076803-1-076803-4

  • [Journal Article] Quantifying carbon nanotube species with resonance Raman scattering2005

    • Author(s)
      A.Jorio
    • Journal Title

      Physical Review B 72

      Pages: 075207-1-075207-5

  • [Journal Article] Step-like dispersion of the intermediate frequency Raman modes in semiconducting and metallic carbon nanotubes2005

    • Author(s)
      C.Fantini
    • Journal Title

      Physical Review B 72

      Pages: 085446-1-085446-5

  • [Journal Article] Conductance and Coherence Lengths in Disordered Carbon Nanotubes : Role of Lattice Defects and Phonon Vibrations2005

    • Author(s)
      S.Roche
    • Journal Title

      Physical Review B 72

      Pages: 113410-1-113410-4

  • [Journal Article] Infrared-active Vibrational Modes of Single-Walled Carbon Nanotubes2005

    • Author(s)
      U.J.Kim
    • Journal Title

      Physical Review Letters 95

      Pages: 157402-1-157402-4

  • [Journal Article] Cutting lines near the Fermi energy of single wall carbon nanotubes2005

    • Author(s)
      R.Saito
    • Journal Title

      Physical Review B 72

      Pages: 153413-1-153413-4

  • [Journal Article] A study of phonon-assisted exciton relaxation dynamics for a (6,5) enriched DNA-wrapped single walled carbon nanotube sample2005

    • Author(s)
      S.G.Chou
    • Journal Title

      Physical Review B 72

      Pages: 195415

  • [Journal Article] Strain-induced quantum interference effects on the resonant Raman cross section of carbon nanotubes2005

    • Author(s)
      A.G.Souza Filho
    • Journal Title

      Physical Review Letters 95

      Pages: 217403-1-217403-4

  • [Journal Article] Dual Raman features of double coaxial carbon nanotubes with N-doped and B-doped multiwalls2005

    • Author(s)
      Q.H.Yang
    • Journal Title

      Nano Letters 5

      Pages: 2465-2469

  • [Journal Article] Electron-phonon matrix elements in single-wall carbon nanotubes2005

    • Author(s)
      J.Jiang
    • Journal Title

      Physical Review B 72

      Pages: 235408-1-235408-11

  • [Journal Article] Incommensurate Mott Insulator in One-Dimensional Electron Systems Close to Quarter Filling2005

    • Author(s)
      H.Yoshioka
    • Journal Title

      J.Phys.Soc.Jpn 74・7

      Pages: 1923-1925

  • [Journal Article] Theory of length-dependent conductance in one-dimensional chains2005

    • Author(s)
      Y.Asai
    • Journal Title

      Physical Review B 72

      Pages: 085431-1-085431-14

  • [Journal Article] Interaction of Ground State of Quarter-Filled One- Dimensional Strongly Correlated Electronic Sysytem with Localized Spins2005

    • Author(s)
      C.Hotta
    • Journal Title

      Physical Review Letters 95

      Pages: 216402-1-216402-4

  • [Journal Article] High energy-resolution electron energy-loss spectroscopy study of the electronic structure of C-60 polymer crystals2005

    • Author(s)
      M.Terauchi
    • Journal Title

      Journal of Electron Spectroscopy and Related Phenomena 143(2-3)

      Pages: 167-172

  • [Journal Article] Solution-processed fabrication of single-walled carbon nanotube2005

    • Author(s)
      M.Shiraishi
    • Journal Title

      Fullerenes Nanotubes and Carbon Nanostructures 13

      Pages: 485-489

  • [Journal Article] Spectroscopic characterization of single-walled carbon nanotube field effect transistors2005

    • Author(s)
      M.Shiraishi
    • Journal Title

      Physical Review B 71(12)

      Pages: 125419

  • [Journal Article] Pressure screening in the interior of primary shells in double-wall carbon nanotubes2005

    • Author(s)
      J.Arvanitidis
    • Journal Title

      Physical Review B 71(12)

      Pages: 125404

  • [Journal Article] Specific heat measurement of the layered nitride superconductor LixZrNCl2005

    • Author(s)
      Y.Taguchi
    • Journal Title

      Physical Review Letters 94(21)

      Pages: 217002

  • [Journal Article] Ambipolar operation of fullerene field-effect transistors by semiconductor/metal interface modification2005

    • Author(s)
      T.Nishikawa
    • Journal Title

      Journal of Applied Physics 97(10)

      Pages: 104509

  • [Journal Article] Metallic Phase in the metal-intercalated higher fullerene Rb8.8(7) C842005

    • Author(s)
      Y.Rikiishi
    • Journal Title

      Physical Review B 71(22)

      Pages: 224118

  • [Journal Article] Metal-organic thin-film transistor (MOTFT) based on bis(o-diiminobenzosemiquinonate) nickel (II) comples2005

    • Author(s)
      S.Noro
    • Journal Title

      Journal of The American Chemical Society 127(28)

      Pages: 10012-10013

  • [Journal Article] Upper critical field in the electron-doped layered superconductor ZrNC10.7 : Magnetresistance studies2005

    • Author(s)
      H.Toh
    • Journal Title

      Physical Review B 72(2)

      Pages: 020501

  • [Journal Article] Control of injected carriers in tetracyano-p-quinodimethane encapsulated carbon nanotube transistors2005

    • Author(s)
      M.Shiraishi
    • Journal Title

      Applied Physics Letters 87(9)

      Pages: 093107

  • [Journal Article] Control of carrier density bay a solution method in carbon-nanotube devices2005

    • Author(s)
      T.Takenobu
    • Journal Title

      Advanced Materials 17(20)

      Pages: 2430

  • [Journal Article] Anomalously large electron-phonon coupling constant in layered nitride superconductors as revealed by high-pressure experiments2005

    • Author(s)
      M.Hisakabe
    • Journal Title

      Physica C-Superconductivity and Its Applications 426

      Pages: 482-486

  • [Journal Article] Superconductivity and physical properties of Ba24Si100 determined from electric transport, specific-heat capacity, and magnetic susceptibility measurements2005

    • Author(s)
      T.Rachi
    • Journal Title

      Physical Review B 72(14)

      Pages: 144504

  • [Journal Article] Suppression of the unconbentional metallic behavior by gate voltage in MWNT device2005

    • Author(s)
      T.Kanbara
    • Journal Title

      Physica E-Low-Dimensional Systems & Nanostructures 29(3-4)

      Pages: 698-701

  • [Journal Article] B-11 NMR study of pure and lighty carbon-doped MgB2 superconductors2005

    • Author(s)
      M.Karayanni
    • Journal Title

      Journal of Superconductivity 18(4)

      Pages: 521-528

  • [Journal Article] Double-wall carbon nanotubes under pressure : Probiding the response of individual tubes and their intratube correlation2005

    • Author(s)
      J.Arvanitidis
    • Journal Title

      Physical Review B 72(19)

      Pages: 193411

  • [Journal Article] Hall effect quasi-hole gas in organic single-crystal transistors2005

    • Author(s)
      J.Takeya
    • Journal Title

      Japanese Journal of Applied Physics Part2-Letters & Express Letters 44(46-49)

      Pages: L1393-L1396

  • [Journal Article] Soft-X-ray Raman scattering of Lal-xSrxTiO32005

    • Author(s)
      T.Higuchi
    • Journal Title

      Journal of Electron Spectroscopy and Related Phenomena 144

      Pages: 853-856

  • [Journal Article] Ferromagnetic metal to spin-glass insulator transition in pyrochlore-type molybdates R2Mo2O7 studied with photoemission and XMCD2005

    • Author(s)
      S.Imada
    • Journal Title

      Journal of Electron Spectroscopy and Related Phenomena 144

      Pages: 711-713

  • [Journal Article] Magneto-optical effect induced by a spin chirality of the itinerant ferromagnet Nd2Mo2O72005

    • Author(s)
      I.Kezsmarki
    • Journal Title

      Physical Review B 72(9)

      Pages: 094427

  • [Journal Article] Direct observation of ordered orbital of YTiO3 by the X-ray magnetic diffraction technique2005

    • Author(s)
      M.Ito
    • Journal Title

      Nuclear Instruments & Methods In Physics Research 238(1-4)

      Pages: 237-241

  • [Journal Article] Observation of nonreciprocal magnetoelectric x-ray scattering in magnetite2005

    • Author(s)
      M.Matsubara
    • Journal Title

      Physical Review B 72(22)

      Pages: 220404

  • [Journal Article] Electron density dependence of the electronic structure ofInN epitaxial layers grown on sapphire (0001)2005

    • Author(s)
      T.Inushima
    • Journal Title

      Physical Review B 72(8)

      Pages: 085210

  • [Journal Article] Upper critical field in the electron-doped layered superconductor ZrNC10.7 : Magnetoresistance studies2005

    • Author(s)
      H.Tou
    • Journal Title

      Physical Review B 72

      Pages: 020501(R)-1-020501(R)-4

  • [Journal Article] Real Space Imaging of the Metal-Insulator Phase Separation in the Band Width Controlled Organic Mott System κ-(BEDT-TTF)2Cu[N(CN)2]Br2005

    • Author(s)
      T.Sasaki
    • Journal Title

      J.Phys.Soc.Jpn. 74

      Pages: 2351-2360

  • [Journal Article] μSR studies of layered organic superconductors : vortex phases, penetration depth and anomalous superfluid properties2005

    • Author(s)
      F.L.Pratt
    • Journal Title

      Synth.Metals 152

      Pages: 417-420

  • [Journal Article] Field induced phase observed above 25T in (DMET TSeF)2I32005

    • Author(s)
      K.Oshima
    • Journal Title

      Synth.Metals 154

      Pages: 249-252

  • [Journal Article] Cu-NMR study on field-induced phase transitions in quantum spin magnet NH4CuCl32005

    • Author(s)
      S.Tani
    • Journal Title

      Prog.Theor.Phys.Suppl. 159

      Pages: 235-240

  • [Journal Article] Superconductivity and physical properties of Ba24Si100 determined from electric transport, specific-heat capacity, and magnetic susceptibility measurements2005

    • Author(s)
      T.Rachi
    • Journal Title

      Physical Review B 72

      Pages: 144504-1-144504-6

  • [Journal Article] Phase separation in the vicinity of the surface of κ-(BEDT-TTF) 2Cu[N(CN)2]Br by fast cooling2005

    • Author(s)
      N.Yoneyama
    • Journal Title

      Physical Review B 72

      Pages: 214519-1-214519-5

  • [Journal Article] 高温超伝導2005

    • Author(s)
      福山秀敏
    • Journal Title

      パリティ 20・12

      Pages: 12-15

  • [Journal Article] Trigonal anisotropy in Graphite and Carbon nanotubes

    • Author(s)
      R.Saito
    • Journal Title

      Liq.Crys.Mol.Crys. (in press)

  • [Journal Article] Photoluminescence and population analysis of single walled carbon nanotubes produced by CVD and pulsed-laser vaporization methods

    • Author(s)
      T.Okazaki
    • Journal Title

      Chem.Phys.Lett. (in press)

  • [Journal Article] Ground state properties of one-dimensional quarter-filled strongly correlated electrons interacting with S=1/2 Kondo spins

    • Author(s)
      C.Hotta
    • Journal Title

      Physica B (in press)

  • [Book] 環状・筒状超分子新素材の応用技術(高田十志和編)2006

    • Author(s)
      竹延 大志, 岩佐 義宏(分担)
    • Total Pages
      246(216-229)
    • Publisher
      シーエムシー出版
  • [Book] ナノマテリアル工学大系 第2巻 ナノ金属(井上明久監修)2006

    • Author(s)
      岩佐 義宏(分担)
    • Total Pages
      880(849-854)
    • Publisher
      フジ・テクノシステム
  • [Book] 有機トランジスタ材料の評価と応用2005

    • Author(s)
      岩佐 義宏(分担)
    • Total Pages
      189
    • Publisher
      シーエムシー出版
  • [Book] 物理学大事典2005

    • Author(s)
      齋藤 理一郎(分担)
    • Total Pages
      896
    • Publisher
      朝倉書店
  • [Book] ナノマテリアルハンドブック2005

    • Author(s)
      齋藤 理一郎(分担)
    • Total Pages
      807
    • Publisher
      (株)エヌ・ティ・エス
  • [Patent(Industrial Property Rights)] 有機半導体装置の閾値電圧の制御方法2005

    • Inventor(s)
      西川 尚男, 小林 慎一郎, 田口 康二郎
    • Industrial Property Rights Holder
      セイコーエプソン(株)
    • Industrial Property Number
      特原2005-261323
    • Filing Date
      2005-09-08
  • [Patent(Industrial Property Rights)] 有機半導体装置の閾値電圧の制御方法2005

    • Inventor(s)
      西川 尚男, 小川 智, 小林 慎一郎, 岩佐 義宏
    • Industrial Property Rights Holder
      セイコーエプソン(株)
    • Industrial Property Number
      特願2005-262674
    • Filing Date
      2005-09-09
  • [Patent(Industrial Property Rights)] 有機半導体装置の閾値電圧の制御方法2005

    • Inventor(s)
      西川 尚男, 小林 慎一郎, 岩佐 義宏
    • Industrial Property Rights Holder
      セイコーエプソン(株)
    • Industrial Property Number
      特願2005-262600
    • Filing Date
      2005-09-09

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Published: 2007-04-02   Modified: 2016-04-21  

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