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arXiv 1204.2650cond-mat.mes-hallcond-mat.str-el
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有限磁链中矢量自旋手征的信息传递

Information transfer by vector spin chirality in finite magnetic chains

Matthias Menzel, Yuriy Mokrousov, Robert Wieser, Jessica E. Bickel, Elena Vedmedenko, Stefan Blügel, Stefan Heinze, Kirsten von Bergmann, André Kubetzka, Roland Wiesendanger

摘要:

矢量自旋手征是复杂磁体的基本特征之一。对于一维自旋螺旋状态,它可以被解释为旋向性,或螺旋的旋转方向。在这里,使用自旋极化扫描隧道显微镜,我们证明了原子尺度的自旋螺旋发生在有限的个人双原子Fe链(5x 1)-Ir(001)表面。我们发现,破反转对称性的表面促进一个方向的矢量自旋手征,导致一个独特的旋转意义上的螺旋在所有的链。相应地,一个链端的自旋方向的变化可以在几十纳米外探测到,这表明了一种在纳米尺度上传输磁性物体状态信息的新方法。

英文摘要:

Vector spin chirality is one of the fundamental characteristics of complex magnets. For a one-dimensional spin-spiral state it can be interpreted as the handedness, or rotational sense of the spiral. Here, using spin-polarized scanning tunneling microscopy, we demonstrate the occurrence of an atomic-scale spin-spiral in finite individual bi-atomic Fe chains on the (5x1)-Ir(001) surface. We show that the broken inversion symmetry at the surface promotes one direction of the vector spin chirality, leading to a unique rotational sense of the spiral in all chains. Correspondingly, changes in the spin direction of one chain end can be probed tens of nanometers away, suggesting a new way of transmitting information about the state of magnetic objects on the nanoscale.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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