تقرير
High-Order Topological Phase Diagram Revealed by Anomalous Nernst Effect in Janus ScClI Monolayer
| العنوان: | High-Order Topological Phase Diagram Revealed by Anomalous Nernst Effect in Janus ScClI Monolayer |
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| المؤلفون: | Yang, Ning-Jing, Zhang, Jian-Min |
| المصدر: | Physical Review B 109, 035423 (2024) |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | Higher-order topological properties of two-dimensional(2D) magnetic materials have recently been proposed. In 2D ferromagnetic Janus materials, we find that ScClI is a second-order topological insulator (SOTI). By means of a multi-orbital tight-binding model, we analyze the orbital contributions of higher-order topologies. Further, we give the complete high-order topological phase diagram of ScClI, based on the external field modulation of the magneto-valley coupling and energy levels. 2D ScClI has a pronounced valley polarization, which causes different insulating phases to exhibit completely different anomalous Nernst conductance. As a result, we use the matched anomalous Nernst effect to reveal the topological phase transition process of ScClI. We utilize the characteristics of valley electronics to link higher-order topological materials with the anomalous Nernst effect, which has potential implications for high-order topological insulators and valley electronics. Comment: 6 pages, 3 pages |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.109.035423 |
| URL الوصول: | http://arxiv.org/abs/2308.07550 |
| رقم الأكسشن: | edsarx.2308.07550 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.109.035423 |
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