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Experimental observation of spin-exchange-induced dimerization of an atomic one-dimensional system

机译:自旋交换诱导的一维原子二聚体的实验观察

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摘要

Using low-temperature scanning tunneling microscopy, we demonstrate a one-dimensional system that undergoes a charge-density-wave (CDW) instability on a metallic substrate. For our measurements we utilize a self-assembled monatomic chain of Co atoms aligned by the steps on a vicinal Cu(111) surface. We assign the measured CDW instability to ferromagnetic interactions along the chain. We show that though the linear arrayed dimers are not electronically isolated, they are magnetically independent, and hence can potentially serve as a binary spin-memory system.
机译:使用低温扫描隧道显微镜,我们演示了一维系统,该系统在金属基底上经历电荷密度波(CDW)不稳定性。对于我们的测量,我们利用通过相邻的Cu(111)表面上的台阶对齐的Co原子的自组装单原子链。我们将测得的CDW不稳定性分配给沿链的铁磁相互作用。我们表明,尽管线性阵列二聚体不是电子隔离的,但它们在磁学上是独立的,因此可以潜在地用作二进制自旋存储器系统。

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