Nonequilibrium magnetotransport through a quantum dot: An interpolative perturbative approach
Nonequilibrium magnetotransport through a quantum dot: An interpolative perturbative approach
复制标题
通过量子点的非平衡磁传输：一种插值微扰方法
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
A. Aligia
中科院分区：
文献类型：
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作者：
A. Aligia
研究了耦合到两个导电引线上的量子点的微分电导、谱密度和磁化强度与偏置电压、磁场和温度的关系。该系统的建模与安德森模型解决了使用自旋相关的插值微扰近似的库仑排斥U，保持电流。当磁场足够大时，微分电导随偏置电压的变化呈现分裂峰。这种分裂大于相应的分裂的谱态密度，与实验一致。
We study the differential conductance, spectral density and magnetization, for a quantum dot coupled to two conducting leads as a function of bias voltage, magnetic field and temperature. The system is modeled with the Anderson model solved using a spin dependent interpolative perturbative approximation in the Coulomb repulsion U that conserves the current. For large enough magnetic field, the differential conductance as a function of bias voltage shows split peaks. This splitting is larger than the corresponding splitting in the spectral density of states, in agreement with experiment.