Temperature-dependent and magnetism-controlled Fermi surface changes in magnetic Weyl semimetals
The coupling between band structure and magnetism can lead to intricate Fermi surface modifications. Here we report on the comprehensive study of the Shubnikov–de Haas (SdH) effect in two rare-earth-based magnetic Weyl semimetals, NdAlSi and CeAlSi_{0.8}Ge_{0.2}. The results show that the temperatur...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2023-04-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.5.L022013 |
| _version_ | 1797210500937809920 |
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| author | Nan Zhang Xianyong Ding Fangyang Zhan Houpu Li Hongyu Li Kaixin Tang Yingcai Qian Senyang Pan Xiaoliang Xiao Jinglei Zhang Rui Wang Ziji Xiang Xianhui Chen |
| author_facet | Nan Zhang Xianyong Ding Fangyang Zhan Houpu Li Hongyu Li Kaixin Tang Yingcai Qian Senyang Pan Xiaoliang Xiao Jinglei Zhang Rui Wang Ziji Xiang Xianhui Chen |
| author_sort | Nan Zhang |
| collection | DOAJ |
| description | The coupling between band structure and magnetism can lead to intricate Fermi surface modifications. Here we report on the comprehensive study of the Shubnikov–de Haas (SdH) effect in two rare-earth-based magnetic Weyl semimetals, NdAlSi and CeAlSi_{0.8}Ge_{0.2}. The results show that the temperature evolution of topologically nontrivial Fermi surfaces strongly depends on magnetic configurations. In NdAlSi, the SdH frequencies vary with temperature in both the paramagnetic state and the magnetically ordered state with a chiral spin texture, but become temperature independent in the high-field fully polarized state. In CeAlSi_{0.8}Ge_{0.2}, SdH frequencies are temperature dependent only in the ferromagnetic state with magnetic fields applied along the axis. First-principles calculations suggest that the notable temperature and magnetic-configuration dependence of Fermi surface morphology can be attributed to strong exchange coupling between the conduction electrons and local magnetic moments. |
| first_indexed | 2024-04-24T10:11:35Z |
| format | Article |
| id | doaj.art-3bf3c61a2137432686839422d3f3beca |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:11:35Z |
| publishDate | 2023-04-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-3bf3c61a2137432686839422d3f3beca2024-04-12T17:30:15ZengAmerican Physical SocietyPhysical Review Research2643-15642023-04-0152L02201310.1103/PhysRevResearch.5.L022013Temperature-dependent and magnetism-controlled Fermi surface changes in magnetic Weyl semimetalsNan ZhangXianyong DingFangyang ZhanHoupu LiHongyu LiKaixin TangYingcai QianSenyang PanXiaoliang XiaoJinglei ZhangRui WangZiji XiangXianhui ChenThe coupling between band structure and magnetism can lead to intricate Fermi surface modifications. Here we report on the comprehensive study of the Shubnikov–de Haas (SdH) effect in two rare-earth-based magnetic Weyl semimetals, NdAlSi and CeAlSi_{0.8}Ge_{0.2}. The results show that the temperature evolution of topologically nontrivial Fermi surfaces strongly depends on magnetic configurations. In NdAlSi, the SdH frequencies vary with temperature in both the paramagnetic state and the magnetically ordered state with a chiral spin texture, but become temperature independent in the high-field fully polarized state. In CeAlSi_{0.8}Ge_{0.2}, SdH frequencies are temperature dependent only in the ferromagnetic state with magnetic fields applied along the axis. First-principles calculations suggest that the notable temperature and magnetic-configuration dependence of Fermi surface morphology can be attributed to strong exchange coupling between the conduction electrons and local magnetic moments.http://doi.org/10.1103/PhysRevResearch.5.L022013 |
| spellingShingle | Nan Zhang Xianyong Ding Fangyang Zhan Houpu Li Hongyu Li Kaixin Tang Yingcai Qian Senyang Pan Xiaoliang Xiao Jinglei Zhang Rui Wang Ziji Xiang Xianhui Chen Temperature-dependent and magnetism-controlled Fermi surface changes in magnetic Weyl semimetals Physical Review Research |
| title | Temperature-dependent and magnetism-controlled Fermi surface changes in magnetic Weyl semimetals |
| title_full | Temperature-dependent and magnetism-controlled Fermi surface changes in magnetic Weyl semimetals |
| title_fullStr | Temperature-dependent and magnetism-controlled Fermi surface changes in magnetic Weyl semimetals |
| title_full_unstemmed | Temperature-dependent and magnetism-controlled Fermi surface changes in magnetic Weyl semimetals |
| title_short | Temperature-dependent and magnetism-controlled Fermi surface changes in magnetic Weyl semimetals |
| title_sort | temperature dependent and magnetism controlled fermi surface changes in magnetic weyl semimetals |
| url | http://doi.org/10.1103/PhysRevResearch.5.L022013 |
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