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Spontaneous Magnetic Superdomain Wall Fluctuations in an Artificial Antiferromagnet
| العنوان: | Spontaneous Magnetic Superdomain Wall Fluctuations in an Artificial Antiferromagnet |
|---|---|
| المؤلفون: | Chen, X. M., Farmer, B., Woods, J. S., Dhuey, S., Hu, W., Mazzoli, C., Wilkins, S. B., Robinson, I. K., De Long, L. E., Roy, S., Hastings, J. T. |
| المصدر: | Phys. Rev. Lett. 123, 197202 (2019) |
| سنة النشر: | 2018 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | Collective dynamics often play an important role in determining the stability of ground states for both naturally occurring materials and metamaterials. We studied the temperature dependent dynamics of antiferromagnetically ordered superdomains in a square artificial spin lattice using soft x-ray photon correlation spectroscopy. We observed an exponential slowing down of superdomain wall motion below the AF onset temperature, similar to the behavior of typical bulk antiferromagnets. Using a continuous time random walk model we show that these superdomain walls undergo low-temperature ballistic and high-temperature diffusive motions. Comment: 5 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.123.197202 |
| URL الوصول: | http://arxiv.org/abs/1809.05656 |
| رقم الأكسشن: | edsarx.1809.05656 |
| قاعدة البيانات: | arXiv |
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