تقرير
Magnetic control of Weyl nodes and wave packets in three-dimensional warped semimetals
| العنوان: | Magnetic control of Weyl nodes and wave packets in three-dimensional warped semimetals |
|---|---|
| المؤلفون: | Focassio, Bruno, Schleder, Gabriel R., Fazzio, Adalberto, Capaz, Rodrigo B., Lopes, Pedro V., Ferreira, Jaime, Enderlein, Carsten, Neto, Marcello B. Silva |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter High Energy Physics - Theory |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Strongly Correlated Electrons, High Energy Physics - Theory |
| الوصف: | We investigate the topological phase transitions driven by band warping and a transverse magnetic field, for three-dimensional Weyl semimetals. First, we use the Chern number as a mathematical tool to derive the topological phase diagram. Next, we associate each of the topological sectors to a given angular momentum state of a rotating wave packet. Then we show how the position of the Weyl nodes can be manipulated by a transverse external magnetic field that ultimately quenches the wave packet rotation, first partially and then completely, thus resulting in a sequence of field-induced topological phase transitions. Finally, we calculate the current-induced magnetization and the anomalous Hall conductivity of a prototypical warped Weyl material. Both observables reflect the topological transitions associated with the wave packet rotation and can help to identify the elusive 3D quantum anomalous Hall effect in three-dimensional, warped Weyl materials. Comment: 6 pages, 5 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2401.06282 |
| رقم الأكسشن: | edsarx.2401.06282 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |