دورية أكاديمية
Strain induced metal-semiconductor transition in two-dimensional topological half metals
العنوان: | Strain induced metal-semiconductor transition in two-dimensional topological half metals |
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المؤلفون: | Jing-Yang You |
المصدر: | iScience, Vol 26, Iss 4, Pp 106312- (2023) |
بيانات النشر: | Elsevier, 2023. |
سنة النشر: | 2023 |
المجموعة: | LCC:Science |
مصطلحات موضوعية: | Condensed matter physics, Magnetism, Science |
الوصف: | Summary: Spintronic applications of two-dimensional (2D) magnetic half metals and semiconductors are thought to be very promising. Here, we suggest a family of stable 2D materials Mn2X7 (X = Cl, Br, and I). The monolayer Mn2Cl7 exhibits an in-plane ferromagnetic (FM) ground state with a Curie temperature of 118 K, which is unveiled to be a 2D Weyl half semimetal with two Weyl points of opposite chirality connected by a remarkable Fermi arc. In addition, it appears that a biaxial tensile strain can lead to a metal-semiconductor phase transition as a result of the increased anomalous Jahn-Teller distortions, which raise the degeneracy of the eg energy level and cause a significant energy splitting. A 10% biaxial tensile strain also increases the Curie temperature to about 159 K, which originates from the enhanced Mn-Cl-Mn FM superexchange. Moreover, the metal-semiconductor transition can also be induced by a uniaxial strain. Our findings provide an idea to create 2D magnetic semiconductors through metal-semiconductor transition in half metals. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 2589-0042 |
Relation: | http://www.sciencedirect.com/science/article/pii/S2589004223003899; https://doaj.org/toc/2589-0042 |
DOI: | 10.1016/j.isci.2023.106312 |
URL الوصول: | https://doaj.org/article/c170f2cdc6e44529b4986a34209c2e73 |
رقم الأكسشن: | edsdoj.170f2cdc6e44529b4986a34209c2e73 |
قاعدة البيانات: | Directory of Open Access Journals |
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