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تسجيل مستخدم جديدمزيج من الحبل المغناطيسي للسكايرميون
Magnetic skyrmion braids
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تستطيع النسيج الفيلامنتي أن يأخذ شكل منشئات مشبكة مثل الحبل في الوسائط غير الخطية مثل البلازما والسوبرفلويد. وتوقع تشكيل مثل هذه المنشئات في الصلبات، مثل خطوط الجريان في السوبركوندوكتور. ومع ذلك، كان الملاحظة لهذه المنشئات من الصعب. هنا، نستخدم المجهر الإلكتروني وطرق العددية للكشف عن منشئات مشبكة من السكايرميونات المغناطيسية في بلورات رقيقة من نوع FeGe B20. وكشفهم يفتح باب التطبيقات لمناظر رئيسية توبولوجية من الحبال الهندسية في الصلبات المغناطيسية.
Filamentary textures can take the form of braided, rope-like superstructures in nonlinear media such as plasmas and superfluids. The formation of similar superstructures in solids has been predicted, for example from flux lines in superconductors. However, their observation has proved challenging. Here, we use electron microscopy and numerical methods to reveal braided superstructures of magnetic skyrmions in thin crystals of B20-type FeGe. Their discovery opens the door to applications of rich topological landscapes of geometric braids in magnetic solids.
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