A new proposal is given to design a spin half‐adder in a nanojunction. It is well known that at finite voltage a net circulating current (known as “circular current”) appears within a mesoscopic ring under the asymmetric ring‐to‐electrode interface configuration. This circular current induces a finite magnetic field at the center of the ring. Herein, this phenomenon is utilized to construct a spin half‐adder. The circular current–induced magnetic field is used to regulate the alignments of local free spins; by their orientations the output states of the “sum” and “carry” are specified. All the outputs are spin based; therefore, the results get atomically stored in the system. The experimental possibilities of the proposed model are also illustrated.

中文翻译：

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旋转半加器

提出了一个新的建议，以设计纳米结中的自旋半加法器。众所周知，在不对称的环-电极界面配置下，介观环内会出现在有限电压下的净循环电流（称为“循环电流”）。该圆形电流在环的中心感应出有限的磁场。在这里，这种现象被用于构建自旋半加器。圆形电流感应磁场用于调节局部自由自旋的排列；通过它们的方向，可以指定“和”和“进位”的输出状态。所有输出均基于自旋；因此，结果被原子存储在系统中。还说明了所提出模型的实验可能性。