1999 Fiscal Year Annual Research Report

単電子輸送と単電子ナノ構造形成の物性論的基礎

Research Project

Project/Area Number	08247105
Research Institution	Keio University
Principal Investigator	川村清慶應義塾大学, 理工学部, 教授 (00011619)
Co-Investigator(Kenkyū-buntansha)	勝本信吾東京大学, 物性研究所, 助教授 (10185829) 樽茶清悟東京大学, 大学院・理学系研究科, 教授 (40302799) 塚田捷東京大学, 大学院・理学系研究科, 教授 (90011650) 津田穣千葉大学, 薬学部, 教授 (90009506) 明楽浩史北海道大学, 大学院・工学研究科, 助教授 (20184129)
Keywords	単電子デバイス / 量子ドット / クーロンブロッケード / カーボンナノチューブ / 多電子系 / トンネル顕微鏡 / 固体表面
Research Abstract	川村は,強磁性ニッケルのコンダクタンスがコンダクタンス量子の半分の値を単位とする事の一つの可能性を示した。塚田は,環状部をもつ分子架橋構造におけるリング電流,磁場によるスイッチング効果などを理論的に予言した。樽茶は,長方形,リング型の微小半導体素子を作成し,形状を反映した電子状態,特に,電子相関の効果を明らかにした。勝本は,単電子トランジスターを用いて量子ホール・エッジ状態の検出に成功し,また,温度の低下とともに回路の電子状態に対する非弾性散乱の効果が消失する事を示唆した。明楽は,単電子トランジスターのクーロン階段の高さの測定から,電子数と基底状態のスピンとの関係を測定する方策について提案した。津田は,アルミニウムのクラスターの帯電エネルギーを半経験的分子軌道法により算出した。伊澤と上田は,室温で動作する単電子デバイスでは,多重障壁といえどもトンネル障壁の量子揺らぎのダイナミックスと高次のトンネル効果が無視できないことを見いだした。名取は,3-5族半導体量子ドット内の励起子スペクトルを量子ドット内の電子数依存性,および印加磁場依存性を導いた。森は,量子ドット中の不純物とフォノンを介したトンネル特性を実験とシミュレーションの双方から明らかにした。藤井は量子ドットのテラヘルツ領域での光学測定を行い,量子ドット間の距離を光励起により変えられることを示した。岩淵は,強磁性量子ドットの磁気トンネル電流および磁気抵抗を計算し,環境インピーダンスへの依存性を求めた。春山が多孔質アルミ薄膜中に量子ドットを作り,量子細線間のトンネル電流を見いだした。

Research Products
(16 results)

All Other

All Publications (16 results)

[Publications] 川村清: "Theory of Artificial Atoms and Molocules Using Semiconductor Quantum Dots"Japanese Journal of Applied Physics. 38. 366-369 (1999)
[Publications] 江藤幹雄: "Many-Body States in a Quautum Dot under High Magnetic Fields"Japanese Journal of Applied Physics. 38. 376-379 (1999)
[Publications] 田村了: "Band Structures of Periodic Nanotube Junctions and their Simmetries"Journal of Physical Society of Japan. 68. 910-922 (1999)
[Publications] 小林伸彦: "Conductance through atoms: Dot or Channel ?"Japanese Journal of Applied Physics. 38. 336-338 (1999)
[Publications] 星野忠次: "Al Adatom Migration on the Partly H-Terminaed Si (111) Surface"Japanese Journal of Applied Psysics. 38. 1858-1861 (1999)
[Publications] 星野忠次: "Migration of an Al Adatoms on the Diamond (001) Surface"Physica Review B. 60. 4810-4815 (1999)
[Publications] 勝本信吾: "Duality between Single-Electron Phenomena and Hux Quatization in Mesoscopic Superconductors"Japanese Journal of Applied Physics. 38. 350-353 (1999)
[Publications] M. Zalalutdinov: "Magnetic Flux Configuration in Mesoscopic Superconductor"Journal of Physical Society of Japan. 68. 2872 (1999)
[Publications] 名取晃子: "Magnetic Field Induced Transitions of Many-Electron States in Quantu Dot"Japanese Journal of Applied Physics. 38. 380-383 (1999)
[Publications] 名取晃子: "Stability of Anisotropid Missing Dimer Clusters on Si (001) Surfaces"Surface Science. 433-435. 600-605 (1999)
[Publications] 藤井研一: "Investigation of the H Band Radiation in Ga As/ Al Ga As Heterostructures by Photoluminescence"Physica B. 272. 434-439 (1999)
[Publications] 藤井研一: "Optically Controlled Confined Potential of Vertically Aligned Double Dot Array System"Superlattice and Microstructure. (掲載決定). (2000)
[Publications] 岩渕修一: "Effect of Electromagnetic Environment on Coherent and Incoherent Cooper Pair Tunneling"Superlatices and Microstructure. (掲載決定). (2000)
[Publications] 若塚富士夫: "Transport Properties of a Resistively-Coupled Single-Electron Transistor"Japanese Journal of Applied Physics. 38. 2470-2473 (1999)
[Publications] 春山純志: "Coulomb Blockade in Single Tunnel Junction Connected to Nanowire and Carbon Nanotube"Applied Physics Letters. (印刷中).
[Publications] 上田正仁: "Ground-State Properties of a Rotating Base-Einstein Condensate"

1999 Fiscal Year Annual Research Report

単電子輸送と単電子ナノ構造形成の物性論的基礎

Principal Investigator

川村 清 慶應義塾大学, 理工学部, 教授 (00011619)

Research Products

[Publications] 川村 清: "Theory of Artificial Atoms and Molocules Using Semiconductor Quantum Dots"Japanese Journal of Applied Physics. 38. 366-369 (1999)

[Publications] 江藤 幹雄: "Many-Body States in a Quautum Dot under High Magnetic Fields"Japanese Journal of Applied Physics. 38. 376-379 (1999)

[Publications] 田村 了: "Band Structures of Periodic Nanotube Junctions and their Simmetries"Journal of Physical Society of Japan. 68. 910-922 (1999)

[Publications] 小林 伸彦: "Conductance through atoms: Dot or Channel ?"Japanese Journal of Applied Physics. 38. 336-338 (1999)

[Publications] 星野 忠次: "Al Adatom Migration on the Partly H-Terminaed Si (111) Surface"Japanese Journal of Applied Psysics. 38. 1858-1861 (1999)

[Publications] 星野 忠次: "Migration of an Al Adatoms on the Diamond (001) Surface"Physica Review B. 60. 4810-4815 (1999)

[Publications] 勝本 信吾: "Duality between Single-Electron Phenomena and Hux Quatization in Mesoscopic Superconductors"Japanese Journal of Applied Physics. 38. 350-353 (1999)

[Publications] M. Zalalutdinov: "Magnetic Flux Configuration in Mesoscopic Superconductor"Journal of Physical Society of Japan. 68. 2872 (1999)

[Publications] 名取 晃子: "Magnetic Field Induced Transitions of Many-Electron States in Quantu Dot"Japanese Journal of Applied Physics. 38. 380-383 (1999)

[Publications] 名取 晃子: "Stability of Anisotropid Missing Dimer Clusters on Si (001) Surfaces"Surface Science. 433-435. 600-605 (1999)

[Publications] 藤井 研一: "Investigation of the H Band Radiation in Ga As/ Al Ga As Heterostructures by Photoluminescence"Physica B. 272. 434-439 (1999)

[Publications] 藤井 研一: "Optically Controlled Confined Potential of Vertically Aligned Double Dot Array System"Superlattice and Microstructure. (掲載決定). (2000)

[Publications] 岩渕 修一: "Effect of Electromagnetic Environment on Coherent and Incoherent Cooper Pair Tunneling"Superlatices and Microstructure. (掲載決定). (2000)

[Publications] 若塚 富士夫: "Transport Properties of a Resistively-Coupled Single-Electron Transistor"Japanese Journal of Applied Physics. 38. 2470-2473 (1999)

[Publications] 春山 純志: "Coulomb Blockade in Single Tunnel Junction Connected to Nanowire and Carbon Nanotube"Applied Physics Letters. (印刷中).

[Publications] 上田 正仁: "Ground-State Properties of a Rotating Base-Einstein Condensate"

川村清慶應義塾大学, 理工学部, 教授 (00011619)

[Publications] 川村清: "Theory of Artificial Atoms and Molocules Using Semiconductor Quantum Dots"Japanese Journal of Applied Physics. 38. 366-369 (1999)

[Publications] 江藤幹雄: "Many-Body States in a Quautum Dot under High Magnetic Fields"Japanese Journal of Applied Physics. 38. 376-379 (1999)

[Publications] 田村了: "Band Structures of Periodic Nanotube Junctions and their Simmetries"Journal of Physical Society of Japan. 68. 910-922 (1999)

[Publications] 小林伸彦: "Conductance through atoms: Dot or Channel ?"Japanese Journal of Applied Physics. 38. 336-338 (1999)

[Publications] 星野忠次: "Al Adatom Migration on the Partly H-Terminaed Si (111) Surface"Japanese Journal of Applied Psysics. 38. 1858-1861 (1999)

[Publications] 星野忠次: "Migration of an Al Adatoms on the Diamond (001) Surface"Physica Review B. 60. 4810-4815 (1999)

[Publications] 勝本信吾: "Duality between Single-Electron Phenomena and Hux Quatization in Mesoscopic Superconductors"Japanese Journal of Applied Physics. 38. 350-353 (1999)

[Publications] 名取晃子: "Magnetic Field Induced Transitions of Many-Electron States in Quantu Dot"Japanese Journal of Applied Physics. 38. 380-383 (1999)

[Publications] 名取晃子: "Stability of Anisotropid Missing Dimer Clusters on Si (001) Surfaces"Surface Science. 433-435. 600-605 (1999)

[Publications] 藤井研一: "Investigation of the H Band Radiation in Ga As/ Al Ga As Heterostructures by Photoluminescence"Physica B. 272. 434-439 (1999)

[Publications] 藤井研一: "Optically Controlled Confined Potential of Vertically Aligned Double Dot Array System"Superlattice and Microstructure. (掲載決定). (2000)

[Publications] 岩渕修一: "Effect of Electromagnetic Environment on Coherent and Incoherent Cooper Pair Tunneling"Superlatices and Microstructure. (掲載決定). (2000)

[Publications] 若塚富士夫: "Transport Properties of a Resistively-Coupled Single-Electron Transistor"Japanese Journal of Applied Physics. 38. 2470-2473 (1999)

[Publications] 春山純志: "Coulomb Blockade in Single Tunnel Junction Connected to Nanowire and Carbon Nanotube"Applied Physics Letters. (印刷中).

[Publications] 上田正仁: "Ground-State Properties of a Rotating Base-Einstein Condensate"