Self-organized nanorods in YBa 2 Cu 3 O 7−δ films are important pinning centers from the technical and fundamental views. While influence of nanoscale factors (>4–5 nm) on the vortex pinning has already been discussed in detail, the interface control of nanorods (at the smaller scale) has not yet been performed. Here, it is demonstrated that the stacking faults can control the nanorod interface to improve the vortex pinning. The stacking faults were formed across the nanorods by post-annealing the YBa 2 Cu 3 O 7−δ films containing BaMO 3 (M = Zr, Sn, Hf) nanorods. The strong bonding between YBa 2 Cu 3 O 7−δ and BaMO 3 varies the atomic position of YBa 2 Cu 3 O 7−δ , degrading an interface sharpness and an elementary pinning force of the nanorod. Scanning transmission electron microscopy and density functional theory calculation clarified that the ...

中文翻译：

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纳米棒和堆垛层错的联合作用改善了YBa 2 Cu 3 O7-δ纳米复合薄膜中的纳米棒界面

从技术和基本观点来看，YBa 2 Cu 3 O7-δ膜中的自组织纳米棒是重要的钉扎中心。尽管已经详细讨论了纳米尺度因素（> 4–5 nm）对涡旋钉扎的影响，但尚未进行纳米棒（较小尺度）的界面控制。在此，证明了堆垛层错可以控制纳米棒界面以改善涡旋钉扎。通过对包含BaMO 3（M = Zr，Sn，Hf）纳米棒的YBa 2 Cu 3 O7-δ膜进行后退火处理，在纳米棒上形成堆叠缺陷。YBa 2 Cu 3 O7-δ与BaMO 3之间的强键改变了YBa 2 Cu 3 O7-δ的原子位置，从而降低了纳米棒的界面清晰度和基本钉扎力。