%0 Journal Article %1 cheng2024tunable %A Cheng, Erjian %A Yan, Limin %A Shi, Xianbiao %A Lou, Rui %A Fedorov, Alexander %A Behnami, Mahdi %A Yuan, Jian %A Yang, Pengtao %A Wang, Bosen %A Cheng, Jin-Guang %A Xu, Yuanji %A Xu, Yang %A Xia, Wei %A Pavlovskii, Nikolai %A Peets, Darren C. %A Zhao, Weiwei %A Wan, Yimin %A Burkhardt, Ulrich %A Guo, Yanfeng %A Li, Shiyan %A Felser, Claudia %A Yang, Wenge %A Büchner, Bernd %D 2024 %J Nat. Commun. %K a b %N 1 %P 1467 %R 10.1038/s41467-024-45658-5 %T Tunable positions of Weyl nodes via magnetism and pressure in the ferromagnetic Weyl semimetal CeAlSi %U https://doi.org/10.1038/s41467-024-45658-5 %V 15 %X The noncentrosymmetric ferromagnetic Weyl semimetal CeAlSi with simultaneous space-inversion and time-reversal symmetry breaking provides a unique platform for exploring novel topological states. Here, by employing multiple experimental techniques, we demonstrate that ferromagnetism and pressure can serve as efficient parameters to tune the positions of Weyl nodes in CeAlSi. At ambient pressure, a magnetism-facilitated anomalous Hall/Nernst effect (AHE/ANE) is uncovered. Angle-resolved photoemission spectroscopy (ARPES) measurements demonstrated that the Weyl nodes with opposite chirality are moving away from each other upon entering the ferromagnetic phase. Under pressure, by tracing the pressure evolution of AHE and band structure, we demonstrate that pressure could also serve as a pivotal knob to tune the positions of Weyl nodes. Moreover, multiple pressure-induced phase transitions are also revealed. These findings indicate that CeAlSi provides a unique and tunable platform for exploring exotic topological physics and electron correlations, as well as catering to potential applications, such as spintronics.

@article{cheng2024tunable, abstract = {The noncentrosymmetric ferromagnetic Weyl semimetal CeAlSi with simultaneous space-inversion and time-reversal symmetry breaking provides a unique platform for exploring novel topological states. Here, by employing multiple experimental techniques, we demonstrate that ferromagnetism and pressure can serve as efficient parameters to tune the positions of Weyl nodes in CeAlSi. At ambient pressure, a magnetism-facilitated anomalous Hall/Nernst effect (AHE/ANE) is uncovered. Angle-resolved photoemission spectroscopy (ARPES) measurements demonstrated that the Weyl nodes with opposite chirality are moving away from each other upon entering the ferromagnetic phase. Under pressure, by tracing the pressure evolution of AHE and band structure, we demonstrate that pressure could also serve as a pivotal knob to tune the positions of Weyl nodes. Moreover, multiple pressure-induced phase transitions are also revealed. These findings indicate that CeAlSi provides a unique and tunable platform for exploring exotic topological physics and electron correlations, as well as catering to potential applications, such as spintronics.}, added-at = {2024-04-26T15:14:48.000+0200}, author = {Cheng, Erjian and Yan, Limin and Shi, Xianbiao and Lou, Rui and Fedorov, Alexander and Behnami, Mahdi and Yuan, Jian and Yang, Pengtao and Wang, Bosen and Cheng, Jin-Guang and Xu, Yuanji and Xu, Yang and Xia, Wei and Pavlovskii, Nikolai and Peets, Darren C. and Zhao, Weiwei and Wan, Yimin and Burkhardt, Ulrich and Guo, Yanfeng and Li, Shiyan and Felser, Claudia and Yang, Wenge and Büchner, Bernd}, biburl = {https://www.bibsonomy.org/bibtex/20f6391c6e9fa2887a8997e335fe4616c/ctqmat}, day = 17, doi = {10.1038/s41467-024-45658-5}, interhash = {4c5e596d4a1a43704ab3a9fe4f67ef68}, intrahash = {0f6391c6e9fa2887a8997e335fe4616c}, issn = {20411723}, journal = {Nat. Commun.}, keywords = {a b}, month = {02}, number = 1, pages = 1467, refid = {Cheng2024}, timestamp = {2024-04-26T15:14:48.000+0200}, title = {Tunable positions of Weyl nodes via magnetism and pressure in the ferromagnetic Weyl semimetal CeAlSi}, url = {https://doi.org/10.1038/s41467-024-45658-5}, volume = 15, year = 2024 }