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建立了描述二嵌段共聚物-(PPP)m-(PT)n-的紧束缚模型,研究了基态下均聚物单体对体系电子结构性质的影响,研究发现可以通过改变均聚物的尺度、配比或界面耦合强度对共聚物能带结构加以调制. 相似文献
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Distinct Three-Level Spin–Orbit Control Associated with Electrically Controlled Band Swapping 下载免费PDF全文
We investigate the Rashba and Dressehaus spin-orbit(SO) couplings in an ordinary GaAs/AlGaAs asymmetric double well,which favors the electron occupancy of three subbands v=1,2,3.Resorting to an external gate,which adjusts the electron occupancy and the well symmetry,we demonstrate distinct three-level SO control of both Rashba(αv) and Dresselhaus(βv) intraband terms.Remarkably,as the gate varies,the first-subband SO parameters α1 and β1 comply with the... 相似文献
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