TY - JOUR
T1 - Tunable positions of Weyl nodes via magnetism and pressure in the ferromagnetic Weyl semimetal CeAlSi
AU - Cheng, Erjian
AU - Yan, Limin
AU - Shi, Xianbiao
AU - Lou, Rui
AU - Fedorov, Alexander
AU - Behnami, Mahdi
AU - Yuan, Jian
AU - Yang, Pengtao
AU - Wang, Bosen
AU - Cheng, Jin Guang
AU - Xu, Yuanji
AU - Xu, Yang
AU - Xia, Wei
AU - Pavlovskii, Nikolai
AU - Peets, Darren C.
AU - Zhao, Weiwei
AU - Wan, Yimin
AU - Burkhardt, Ulrich
AU - Guo, Yanfeng
AU - Li, Shiyan
AU - Felser, Claudia
AU - Yang, Wenge
AU - Büchner, Bernd
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2024/12
Y1 - 2024/12
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/85185353086
U2 - 10.1038/s41467-024-45658-5
DO - 10.1038/s41467-024-45658-5
M3 - 文章
C2 - 38368411
AN - SCOPUS:85185353086
SN - 2041-1723
VL - 15
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 1467
ER -