SymGF: a symbolic tool for quantum transport analysis and its application to a double quantum dot system
文献类型：期刊论文
| 作者 | Feng, ZM ; Sun, QF ; Wan, LH ; Guo, H |
| 刊名 | JOURNAL OF PHYSICS-CONDENSED MATTER
 |
| 出版日期 | 2011 |
| 卷号 | 23期号:41 |
| 关键词 | FANO-KONDO INTERACTION ANDERSON MODEL DEPENDENT TRANSPORT LOW-TEMPERATURE EQUILIBRIUM APPROXIMATION SCATTERING STATES |
| ISSN号 | 0953-8984 |
| 通讯作者 | Feng, ZM (reprint author), McGill Univ, Ctr Phys Mat, Montreal, PQ H3A 2T8, Canada. |
| 中文摘要 | We report the development and an application of a symbolic tool, called SymGF, for analytical derivations of quantum transport properties using the Keldysh nonequilibrium Green's function (NEGF) formalism. The inputs to SymGF are the device Hamiltonian in the second quantized form, the commutation relation of the operators and the truncation rules of the correlators. The outputs of SymGF are the desired NEGF that appear in the transport formula, in terms of the unperturbed Green's function of the device scattering region and its coupling to the device electrodes. For complicated transport analysis involving strong interactions and correlations, SymGF provides significant assistance in analytical derivations. Using this tool, we investigate coherent quantum transport in a double quantum dot system where strong on-site interaction exists in the side-coupled quantum dot. Results obtained by the higher-order approximation and Hartree-Fock approximation are compared. The higher-order approximation reveals Kondo resonance features in the density of states and conductances. Results are compared both qualitatively and quantitatively to the experimental data reported in the literature. |
| 收录类别 | SCI |
| 资助信息 | NSERC of Canada; FQRNT of Quebec; CIFAR |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/54256]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Feng, ZM,Sun, QF,Wan, LH,et al. SymGF: a symbolic tool for quantum transport analysis and its application to a double quantum dot system[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2011,23(41). |
| APA | Feng, ZM,Sun, QF,Wan, LH,&Guo, H.(2011).SymGF: a symbolic tool for quantum transport analysis and its application to a double quantum dot system.JOURNAL OF PHYSICS-CONDENSED MATTER,23(41). |
| MLA | Feng, ZM,et al."SymGF: a symbolic tool for quantum transport analysis and its application to a double quantum dot system".JOURNAL OF PHYSICS-CONDENSED MATTER 23.41(2011). |
入库方式： OAI收割
来源：物理研究所
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