利用基于Green Function的Tight-binding方法,对由平面共轭分子连结成的三端子纳米分子桥进行了理论研究和数值模拟,得出了入射电子通过纳米分子桥传输到各个端点的电子传输概率,揭示出传导电子与分子轨道共振时传输峰值的出现和电子传输振荡的物理机制.利用Fisher-Lee 关系式和电子流密度理论,在传输概率出现峰值的两个能量点E=±1.89处计算了分子桥内的电子流分布,同时得出了键电子流的最大值,并且得出了数值模拟结果.
参考文献
| [1] | Aviram A;Ratner M A .Molecular Rectifiers[J].Chemical Physics Letters,1974,29:277-283. |
| [2] | Aviram A;Ratner M A.Molecular Electronics[M].New York:Annals of New York Academy of Sciences,1998:36-190. |
| [3] | Joachim C;Gimzewski J K;Aviram A .Electronics Using Hybrid-molecular and Mono-molecular Devices[J].Nature,2000,408:541-548. |
| [4] | Morita S;Wiesendanger R;Meyer E.Noncontact Atomic Force Microscopy[M].Berlin:Springer,2002:11-46. |
| [5] | Mathur Neil .Beyond the Silicon Roadmap[J].Nature,2002,419:573-575. |
| [6] | Smit RH;Noat Y;Untiedt C;Lang ND;Van Hemert MC;Van Ruitenbeek JM .Measurement of the conductance of a hydrogen molecule.[J].Nature,2002(6910):906-909. |
| [7] | Aviram A .Molecular Memory Devices[J].Journal of the American Chemical Society,1988,110:5687-5692. |
| [8] | RAMACHANDRAN G K;J.Hopson T;Rawlett A M 等.A Bond -fluctuation Mechanism for Stochastic Switching in Wired Molecules[J].Science,2003,300:1413-1415. |
| [9] | Bachtold A;Hadley P;Nakanishi T;Dekker C .Logic Circuits with Carbon Nanotube Transistors[J].Science,2001,294:1317-1320. |
| [10] | Cui Y;Lieber C M .Functional Nanoscale Electronic Devices Assembled Using Silicon Nanowire Building Blocks[J].Science,2001,291:851-853. |
| [11] | Tans SJ.;Verschueren ARM.;Dekker C. .Room-temperature transistor based on a single carbon nanotube[J].Nature,1998(6680):49-52. |
| [12] | Huang Y;Duan X F;Cui Y 等.Logic Gates and Computation from Assembled Nanowire Building Blocks[J].Science,2001,294:1313-1317. |
| [13] | Joachim C;Gimzeski J K;Schlittler R R 等.Electronic Transparence of a Single C60 Molecule[J].Physical Review Letters,1995,74:2102-2105. |
| [14] | Bumm L A;Arnold J J;Cygan M T 等.Are Single Molecular Wires Conducting[J].Science,1996,271:1705-1707. |
| [15] | Andres R P;Bein T;Dorogi M;Feng S, .Coulomb Staircase at Room Temperature in a Self-assembled Molecular Nanostructure[J].Science,1996,272:1323-1225. |
| [16] | Reed M A;Zhou C;Muller C J 等.Conductance of a Molecular Junction[J].Science,1997,278:252-253. |
| [17] | Wang L G;Tagami K;Tsukada M .Quantum Transmission of 3-terminal Molecular Bridge[J].Journal of Japanese Phys Soc,2003,58:785. |
| [18] | Katsunori Tagami;Liguang Wang;Masaru Tsukada .Interface Sensitivity in Quantum Transport through Single Molecules[J].Nano letters,2004(2):209-212. |
| [19] | 加藤礼三.分子の国の传道电子[M].东京:岩波书店,2001:10-35. |
| [20] | Datta s.Electronic Transport in Mesoscopic Systems[M].Cambridge:Cambridge University Press,1995:139-148. |
| [21] | MUJICA V;Kemp M;Ratner M A .Electron Conduction in Molecular Wires[J].Journal of Chemical Physics,1994,101:6849-6864. |
| [22] | Fisher D S;Lee P A .Relation between Conductivity and Transmission Matrix[J].Physical Review,1981,B23:6851-6854. |
| [23] | Tersoff J;Hamann D R .Theory of the Scanning Tunneling Microscope[J].Physical Review,1985,B31:805-813. |
| [24] | Nakanishi S.;Tsukada M.;Tamura R. .Ballistic transport in artificial nano-circuits[J].Japanese journal of applied physics,1998(6B):3805-3808. |
| [25] | 王利光,王军.O5+离子与H原子碰撞时电子俘获概率的计算[J].物理学报,2003(02):312-315. |
| [26] | RUEDENBERG K;Scherr C W .Kinetic Theory of Molecular Nodal[J].Journal of Chemical Physics,1953,21:1565-1581. |
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