Dynamics in the O(2 × 1) adlayer on Ru(0001): bridging timescales from milliseconds to minutes by scanning tunneling microscopy,Physical Chemistry Chemical Physics

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Dynamics in the O(2 × 1) adlayer on Ru(0001): bridging timescales from milliseconds to minutes by scanning tunneling microscopy
Physical Chemistry Chemical Physics ( IF 2.9 ) Pub Date : 2022-06-13 , DOI: 10.1039/d2cp02363f
Leonard Gura ₁ , Zechao Yang ₁ , Joachim Paier ₂ , Florian Kalaß ₁ , Matthias Brinker ₁ , Heinz Junkes ₁ , Markus Heyde ₁ , Hans-Joachim Freund ₁

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The dynamics within an O(2 × 1) adlayer on Ru(0001) is studied by density functional theory and high-speed scanning tunneling microscopy. Transition state theory proposes dynamic oxygen species in the reduced O(2 × 1) layer at room temperature. Collective diffusion processes can result in structural reorientations of characteristic stripe patterns. Spiral high-speed scanning tunneling microscopy measurements reveal this reorientation as a function of time in real space. Measurements, ranging over several minutes with constantly high frame rates of 20 Hz resolved the gradual reorientation. Moreover, reversible fast flipping events of stripe patterns are observed. These measurements relate the observations of long-term atomic rearrangements and their underlying fast processes captured within several tens of milliseconds.

中文翻译：

Ru（0001）上O（2×1）adlayer的动力学：通过扫描隧道显微镜将时间尺度从毫秒到分钟

通过密度泛函理论和高速扫描隧道显微镜研究了Ru（0001）上的O（2×1）adlayer内的动力学。过渡态理论提出了在室温下还原的 O(2 × 1) 层中的动态氧物质。集体扩散过程可以导致特征条纹图案的结构重新定向。螺旋高速扫描隧道显微镜测量揭示了这种重新定向是真实空间中时间的函数。持续数分钟的测量以 20 Hz 的高帧速率解决了逐渐重新定向的问题。此外，观察到条纹图案的可逆快速翻转事件。这些测量与长期原子重排的观察及其在几十毫秒内捕获的潜在快速过程有关。

更新日期：2022-06-13

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