تقرير
Ferroelectrovalley in Two-Dimensional Multiferroic Lattices
العنوان: | Ferroelectrovalley in Two-Dimensional Multiferroic Lattices |
---|---|
المؤلفون: | Zhao, Jiangyu, Feng, Yangyang, Dai, Ying, Huang, Baibiao, Ma, Yandong |
سنة النشر: | 2024 |
المجموعة: | Condensed Matter |
مصطلحات موضوعية: | Condensed Matter - Materials Science |
الوصف: | Engineering valley index is essential and highly sought for valley physics, but currently it is exclusively based on the paradigm of the challenging ferrovalley with spin-orientation reversal under magnetic field. Here, an alternative strategy, i.e., the so-called ferroelectrovalley, is proposed to tackle the insurmountable spin-orientation reversal, which reveres valley index with the feasible ferroelectricity. Using symmetry arguments and tight-binding model, the C_2 rotation is unveiled to be able to take the place of time reversal for operating valley index in two-dimensional multiferroic kagome lattices, which enables the ferroelectricity-engineered valley index, thereby generating the concept of ferroelectrovalley. Based on first-principles calculations, this concept is further demonstrated in the breathing kagome lattice of single-layer Ti3Br8, wherein ferroelectricity couples the breathing process. These findings open a new direction for valleytronics and two-dimensional materials research. |
نوع الوثيقة: | Working Paper |
URL الوصول: | http://arxiv.org/abs/2404.08988 |
رقم الأكسشن: | edsarx.2404.08988 |
قاعدة البيانات: | arXiv |
كن أول من يترك تعليقا!