单手螺旋结构中构象相关的磁输运
Conformation dependent magnetotransport in a single handed helical geometry
摘要：
本文用Hartree-Fock平均场方法研究了单手螺旋结构中存在磁通量$ϕ$时与构象有关的圆电流。螺旋模型由一组通过一些垂直键连接的非平面环来描述，其中每个环通过在原子$a$和$b$之间引入非零跳跃来形成，如图1所示。通过拉伸和压缩的几何形状，循环电流可以被调节显着，因此该系统可以被用来设计在纳米级的电流控制器件。详细讨论了原子位$a$和$b$之间的邻近效应，得到了一些有趣的结果.
英文摘要：
Conformation dependent circular current is investigated in a single handed helical geometry in presence of magnetic flux $ϕ$ within a Hartree-Fock mean field approach. The helical model is described by a set of non-planar rings connected by some vertical bonds where each ring is formed by introducing a non-zero hopping between the atoms $a$ and $b$ as shown in Fig.1. By stretching and compressing the geometry, circular current can be regulated significantly and thus the system can be exploited to design current controlled device at the nano-scale level. The proximity effect between the atomic sites $a$ and $b$ is also discussed in detail which exhibits interesting results.
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