Microwave-induced direct spin-flip transitions in mesoscopic Pd/Co heterojunctions
Microwave-induced direct spin-flip transitions in mesoscopic Pd/Co heterojunctions
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DOI：
10.1088/1367-2630/18/9/093045
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发表时间：
2016-09
影响因子：
3.3
通讯作者：
T. Pietsch;S. Egle;M. Keller;Hans Fridtjof-Pernau;F. Strigl;E. Scheer
中科院分区：
文献类型：
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作者：
T. Pietsch;S. Egle;M. Keller;Hans Fridtjof-Pernau;F. Strigl;E. Scheer
实验研究了共振微波吸收对可调谐Co/Pd点接触磁导的影响。在界面处，通过微波吸收产生非平衡自旋累积，并且可以通过点接触光谱来探测。我们解释的结果作为一个签名的直接自旋翻转激发塞曼分裂自旋子带内的Pd正常金属部分的结。与铁磁体/正常金属点接触中微波光子发射相关的逆效应也可以通过其在输运光谱中的独特特征来检测。
We experimentally investigate the effect of resonant microwave absorption on the magneto-conductance of tunable Co/Pd point contacts. At the interface a non-equilibrium spin accumulation is created via microwave absorption and can be probed via point contact spectroscopy. We interpret the results as a signature of direct spin-flip excitations in Zeeman-split spin-subbands within the Pd normal metal part of the junction. The inverse effect, which is associated with the emission of a microwave photon in a ferromagnet/normal metal point contact, can also be detected via its unique signature in transport spectroscopy.