2003 Fiscal Year Annual Research Report

連続したナノ空間に閉じ込められた物質の伝導ダイナミックス

Research Project

Project/Area Number	15201019
Research Institution	Tohoku University
Principal Investigator	豊田直樹東北大学, 大学院・理学研究科, 教授 (50124607)
Co-Investigator(Kenkyū-buntansha)	黒田規敬熊本大学, 工学部, 教授 (40005963) 松井広志東北大学, 大学院・理学研究科, 助教授 (30275292)
Keywords	ナノ多孔体 / 電気伝導体 / カーボンナノチューブ / 人工配列したDNA
Research Abstract	本研究の目的は、物質合成と構造解析のグループと共同して、ナノ多孔体を舞台にした新しい物質の電子物性を伝導・誘電ダイナミックスの観点から解明することにある。平成15年度の研究成果および進行状況を以下列記する。 1.栃木ニコンによるテラヘルツ分光器(設備備品)の試作を終え、現在低温用クライオスタットの導入テストなど装置の立ち上げと試運転を行っている。 2.CMK-1(およびその関連物質)に関しては、室温からヘリューム温度までの電気伝導度、低温での磁気抵抗効果を6種類のCMKに関して調べ、現在可変ホッピングモデルで解析中 3.人工配列したDNA結晶のマイクロ波伝導度を測定し、GC, AT配列したDNAの伝導が大きく異なることを見いだした。理論家との議論を進めスモールポラロン伝導の観点から現在論文準備中 4.新ナノ多孔体PKU-nの合成とその1次元チャンネル内でのカーボンナノチューブの合成を行ってきた。(Ju Jing,21世紀COE外国人研究者と共同)有機アミン類を導入、パイロレシスにて合成を行い、ラーマン散乱による同定を行っている。 5.Tang教授のぐるに依頼されたALPO中カーボンナノチューブの超伝導の確認実験を詳細に繰り返したが、超伝導の確認には至っていない。

Research Products
(18 results)

All Other

All Publications (18 results)

[Publications] Takagi S, Matsui H, Toyota N, et al.: "Enhancement of the H-1 NMR relaxation rate at low temperatures and development of antiferromagnetic spin fluctuations of pi-electrons in superconducting lambda-(BETS)(2)GaCl4"J PHYS SOC JPN. 72・12. 3259-3265 (2003)
[Publications] Toyota N, Matsui H, et al.: "Magnetic field effects on nonlinear electrical transport in lambda-(BEDT-TSF)(2)FeCl4, where BEDT-TSF is bis(ethylenedithio)tetraselenafulvalene"J PHYS SOC JPN. 72・11. 2714-2717 (2003)
[Publications] Matsui H, Toyota N, et al.: "Relaxor ferroelectric behavior and collective modes in the pi-d correlated anomalous metal lambda-(BEDT-TSF)(2)FeCl4"PHYS REV B. 68・15. 155105 (2003)
[Publications] Pratt FL, Matsui H, Toyota N, et al.: "mu SR studies of magnetic superconductors based on the BETS molecule"POLYHEDRON. 22・14-17. 2307-2310 (2003)
[Publications] Abe Y, Matsui H, Toyota N, et al.: "Nonlinear electrical transport in lambda-(BEDT-TSF)(2)FeCl4 under magnetic field"SYNTHETIC MET. 135・1-3. 565-566 (2003)
[Publications] Suzuki T, Matsui H, Toyota N, et al.: "Antiferromagnetic resonance in lambda-(BEDT-TSF)(2)FeCl4"SYNTHETIC MET. 135・1-3. 567-568 (2003)
[Publications] Matsui H, Toyota N, et al.: "Anisotropic microwave complex conductivities in lambda-(BEDT-TSF)(2)FeCl4"SYNTHETIC MET. 135・1-3. 569-570 (2003)
[Publications] Kuno M, Matsui H, Terasaki O, Ryoo R, Toyota N, et al.: "Magnetic susceptibility and electrical resistivity of a mesoporous carbon CMK-1"SYNTHETIC MET. 135・1-3. 721-722 (2003)
[Publications] Takagi S, Toyota N, et al.: "NMR evidence for antiferromagnetic spin fluctuations in superconducting lambda-(BETS)(2)GaCl4"SYNTHETIC MET. 137・1-3. 1297-1298 (2003)
[Publications] Ishizaki Y, Matsui H, Toyota N, et al.: "Specific heat of organic superconductor lambda-(BEDT-TSF)(2)GaCl4"SYNTHETIC MET. 133. 219-220 (2003)
[Publications] Matsumoto T, Toyota N, et al.: "Crystal structures and conducting/magnetic properties in two different crystals of (ethylene dithiotetrathiafulvalenoquinone-1,3-dithiolemethide)(2)center dot MBr4 (M=Fe, Ga)"SYNTHETIC MET. 133. 333-335 (2003)
[Publications] Pratt FL, Toyota N, et al.: "mu SR studies of the interaction between magnetism and superconductivity in kappa-BETS2FeCl4"SYNTHETIC MET. 133. 489-492 (2003)
[Publications] Toyota N, Matsui H, et al.: "A dielectric metal lambda-(BEDT-TSF)(2)FeCl4"SYNTHETIC MET. 133. 493-495 (2003)
[Publications] Kuroda N, H, Toyota N, et al.: "Electronic properties of Cs(2)TCNQ(3) crystals grown under magnetic field"SYNTHETIC MET. 133. 535-537 (2003)
[Publications] Negishi E, Matsui H, Toyota N, et al.: "Specific heat studies for lambda-(BEDT-TSF)(2)FeCl4"SYNTHETIC MET. 133. 555-556 (2003)
[Publications] Endo S, Matsui H, Toyota N, et al.: "Metal-insulator transitions in magnetic conductor lambda-(BEDT-TSF)(2)FeCl4 studied by H-1 and Se-77 NMR"SYNTHETIC MET. 133. 557-558 (2003)
[Publications] Matsui H, Toyota N, et al.: "Dielectric response in the metallic states of lambda-(BEDT-TSF)(2)FeCl4"SYNTHETIC MET. 133. 559-560 (2003)
[Publications] Tsuchiya H, Matsui H, Toyota N, et al.: "Microwave response in the antiferromagnetic insulating states of lambda-(BEDT-TSF)(2)FeCl4"SYNTHETIC MET. 133. 561-562 (2003)

2003 Fiscal Year Annual Research Report

連続したナノ空間に閉じ込められた物質の伝導ダイナミックス

Principal Investigator

豊田 直樹 東北大学, 大学院・理学研究科, 教授 (50124607)

Research Products

[Publications] Takagi S, Matsui H, Toyota N, et al.: "Enhancement of the H-1 NMR relaxation rate at low temperatures and development of antiferromagnetic spin fluctuations of pi-electrons in superconducting lambda-(BETS)(2)GaCl4"J PHYS SOC JPN. 72・12. 3259-3265 (2003)

[Publications] Toyota N, Matsui H, et al.: "Magnetic field effects on nonlinear electrical transport in lambda-(BEDT-TSF)(2)FeCl4, where BEDT-TSF is bis(ethylenedithio)tetraselenafulvalene"J PHYS SOC JPN. 72・11. 2714-2717 (2003)

[Publications] Matsui H, Toyota N, et al.: "Relaxor ferroelectric behavior and collective modes in the pi-d correlated anomalous metal lambda-(BEDT-TSF)(2)FeCl4"PHYS REV B. 68・15. 155105 (2003)

[Publications] Pratt FL, Matsui H, Toyota N, et al.: "mu SR studies of magnetic superconductors based on the BETS molecule"POLYHEDRON. 22・14-17. 2307-2310 (2003)

[Publications] Abe Y, Matsui H, Toyota N, et al.: "Nonlinear electrical transport in lambda-(BEDT-TSF)(2)FeCl4 under magnetic field"SYNTHETIC MET. 135・1-3. 565-566 (2003)

[Publications] Suzuki T, Matsui H, Toyota N, et al.: "Antiferromagnetic resonance in lambda-(BEDT-TSF)(2)FeCl4"SYNTHETIC MET. 135・1-3. 567-568 (2003)

[Publications] Matsui H, Toyota N, et al.: "Anisotropic microwave complex conductivities in lambda-(BEDT-TSF)(2)FeCl4"SYNTHETIC MET. 135・1-3. 569-570 (2003)

[Publications] Kuno M, Matsui H, Terasaki O, Ryoo R, Toyota N, et al.: "Magnetic susceptibility and electrical resistivity of a mesoporous carbon CMK-1"SYNTHETIC MET. 135・1-3. 721-722 (2003)

[Publications] Takagi S, Toyota N, et al.: "NMR evidence for antiferromagnetic spin fluctuations in superconducting lambda-(BETS)(2)GaCl4"SYNTHETIC MET. 137・1-3. 1297-1298 (2003)

[Publications] Ishizaki Y, Matsui H, Toyota N, et al.: "Specific heat of organic superconductor lambda-(BEDT-TSF)(2)GaCl4"SYNTHETIC MET. 133. 219-220 (2003)

[Publications] Matsumoto T, Toyota N, et al.: "Crystal structures and conducting/magnetic properties in two different crystals of (ethylene dithiotetrathiafulvalenoquinone-1,3-dithiolemethide)(2)center dot MBr4 (M=Fe, Ga)"SYNTHETIC MET. 133. 333-335 (2003)

[Publications] Pratt FL, Toyota N, et al.: "mu SR studies of the interaction between magnetism and superconductivity in kappa-BETS2FeCl4"SYNTHETIC MET. 133. 489-492 (2003)

[Publications] Toyota N, Matsui H, et al.: "A dielectric metal lambda-(BEDT-TSF)(2)FeCl4"SYNTHETIC MET. 133. 493-495 (2003)

[Publications] Kuroda N, H, Toyota N, et al.: "Electronic properties of Cs(2)TCNQ(3) crystals grown under magnetic field"SYNTHETIC MET. 133. 535-537 (2003)

[Publications] Negishi E, Matsui H, Toyota N, et al.: "Specific heat studies for lambda-(BEDT-TSF)(2)FeCl4"SYNTHETIC MET. 133. 555-556 (2003)

[Publications] Endo S, Matsui H, Toyota N, et al.: "Metal-insulator transitions in magnetic conductor lambda-(BEDT-TSF)(2)FeCl4 studied by H-1 and Se-77 NMR"SYNTHETIC MET. 133. 557-558 (2003)

[Publications] Matsui H, Toyota N, et al.: "Dielectric response in the metallic states of lambda-(BEDT-TSF)(2)FeCl4"SYNTHETIC MET. 133. 559-560 (2003)

[Publications] Tsuchiya H, Matsui H, Toyota N, et al.: "Microwave response in the antiferromagnetic insulating states of lambda-(BEDT-TSF)(2)FeCl4"SYNTHETIC MET. 133. 561-562 (2003)

豊田直樹東北大学, 大学院・理学研究科, 教授 (50124607)