论文标题
Floquet Renoralization Group方法定期驱动的近藤模型
Floquet Renormalization Group Approach to the Periodically Driven Kondo Model
论文作者
论文摘要
我们通过考虑由时间周期性偏置电压驱动的强耦合近藤模型来研究强相关性和相干驱动的相互作用。将最新的非平衡重归其化方法与浮雕理论相结合，我们发现，通过电导中近托共振的驱动场侧侧重倍振形的相干敷料，并未被驾驶引起的破坏性所消除。我们表明，要准确捕获驾驶的相互作用和强烈的相关性，需要超越简单的现象学图片，这些现象学图片低估了腐蚀或绝热近似，从而突出了非马克维亚记忆效应的相关性。在我们的方法中，差分电导显示了从弱驾驶到强驱动的完整跨界型中的实验数据的良好定量一致性。我们根据对短电压脉冲的响应详细分析记忆效应。
We study the interplay of strong correlations and coherent driving by considering the strong-coupling Kondo model driven by a time-periodic bias voltage. Combining a recent nonequilibrium renormalization group method with Floquet theory, we find that by the coherent dressing of the driving field side-replicas of the Kondo resonance emerge in the conductance, which are not completely washed out by the decoherence induced by the driving. We show that to accurately capture the interplay of driving and strong correlations one needs to go beyond simple phenomenological pictures, which underestimate decoherence, or adiabatic approximations, highlighting the relevance of non-Markovian memory effects. Within our method the differential conductance shows good quantitative agreement with experimental data in the full crossover regime from weak to strong driving. We analyze memory effects in detail based on the response to short voltage pulses.
