Quantum coherence of the molecular states and their corresponding currents in nanoscale Aharonov-Bohm interferometers

By considering a nanoscale Aharonov-Bohm (AB) interferometer containing a parrallel-coupled double dot coupled to the source and drain electrodes, we investigate the AB phase oscillations of transport current via the bonding and antibonding state channels. The results we obtained justify the experimental analysis given in [Phys. Rev. Lett. \textbf{106}, 076801 (2011)] that bonding state currents in different energy configurations are almost the same. On the other hand, we extend the analysis to the transient transport current components flowing through different channels, to explore the effect of the parity of bonding and antibonding states on the AB phase dependence of the corresponding current components in the transient regime. The relations of the AB phase dependence between the quantum states and the associated current components are analyzed in details, which provides useful information for the reconstruction of quantum states through the measurement of the transport current in such systems. With the coherent properties in the quantum dot states as well as in the transport currents, we also provide a way to manipulate the bonding and antibonding states by the AB magnetic flux.Comment: 10 pages, 7 figure

ガラクトース転移酵素-3欠損マウスは高免疫原性腫瘍の増殖を抑制する

京都大学新制・課程博士博士(医科学)甲第25008号医科博第155号新制||医科||10(附属図書館)京都大学大学院医学研究科医科学専攻(主査)教授 伊藤 貴浩, 教授 藤田 恭之, 教授 伊藤 能永学位規則第4条第1項該当Doctor of Medical ScienceKyoto UniversityDFA