دورية أكاديمية
A model heterostructure with engineered Berry curvature
| العنوان: | A model heterostructure with engineered Berry curvature |
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| المؤلفون: | Nathaniel J. Schreiber, Ludi Miao, Berit H. Goodge, Lena F. Kourkoutis, Kyle M. Shen, Darrell G. Schlom |
| المصدر: | APL Materials, Vol 11, Iss 6, Pp 061117-061117-7 (2023) |
| بيانات النشر: | AIP Publishing LLC, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Biotechnology LCC:Physics |
| مصطلحات موضوعية: | Biotechnology, TP248.13-248.65, Physics, QC1-999 |
| الوصف: | Molecular-beam epitaxy enables ultrathin functional materials to be combined in heterostructures to create emergent phenomena at the interface. Magnetic skyrmions are an example of an exciting phase found in such heterostructures. SrRuO3 and SrRuO3-based heterostructures have been at the center of the debate on whether a hump-like feature appearing in Hall resistivities is sufficient evidence to prove the presence of skyrmions in a material. To address the ambiguity, we synthesize a model heterostructure with engineered Berry curvature that combines, in parallel, a positive anomalous Hall effect (AHE) channel (a Sr0.6Ca0.4RuO3 layer) with a negative AHE channel (a SrRuO3 layer). We demonstrate that the two opposite AHE channels can be combined to artificially reproduce a “hump-like” feature, which closely resembles the hump-like feature typically attributed to the topological Hall effect and the presence of chiral spin textures, such as skyrmions. We compare our heterostructure with a parallel resistor model, where the inputs are the AHE data from individual Sr0.6Ca0.4RuO3 and SrRuO3 films. To check for the presence of skyrmions, we measure the current dependence, angle dependence, and minor loop dependence of Rhump in the heterostructure. Despite the clear hump, no evidence of skyrmions is found. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2166-532X |
| Relation: | https://doaj.org/toc/2166-532X |
| DOI: | 10.1063/5.0151126 |
| URL الوصول: | https://doaj.org/article/b972b0bcd5e24d50bfc211e3fe2e0ce7 |
| رقم الأكسشن: | edsdoj.b972b0bcd5e24d50bfc211e3fe2e0ce7 |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Scitation. 
Full Text Finder | تدمد: | 2166532X |
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| DOI: | 10.1063/5.0151126 |