Magnetization tunable Weyl states in 
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Su, Hao; Shi, Xianbiao; Yuan, Jian; Zhang, X.; Wang, Xia; Yu, Na; Zou, Zhiqiang; Zhao, Weiwei; Liu, Jianpeng; Guo, Yanfeng

doi:10.1103/physrevb.106.054411

Cited by 13 publications

(2 citation statements)

References 65 publications

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“…The in-plane transport behavior is more complex due to magnetocrystalline anisotropy, but a similar conclusion can be drawn. In MTMs, the coupling between magnetic configuration and external magnetic field could produce various intermediate magnetic or topological states, and hence the variation of AHE may come from these states 23 – 28 . However, for CeAlSi, it was proposed that the angle between the noncollinear spins does not change with the applied magnetic field up to 8 T 41 .…”

Section: Resultsmentioning

confidence: 99%

“…The intricate relationship between magnetism and topology continues to be complex, yet holds promise for unlocking new and exotic topological states. Hitherto research on this interplay is limited to a few cases, for example, a magnetic field-induced ideal type-II Weyl state in Mn(Bi 1-x Sb x ) 2 Te 4 23 , 24 , a magnetic-exchange-induced Weyl state in EuCd 2 Sb 2 25 , a spin-fluctuation-induced Weyl semimetal state in EuCd 2 As 2 17 , 26 , a magnetism-induced topological transition in EuAs 3 27 , and magnetization-tunable Weyl states in EuB 6 28 , etc. To exploit more novel phenomena and elaborate the relationship, more systems are called for.…”

Section: Introductionmentioning

confidence: 99%

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Tunable positions of Weyl nodes via magnetism and pressure in the ferromagnetic Weyl semimetal CeAlSi

Cheng,

Yan,

Shi

et al. 2024

Nat Commun

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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.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tunable positions of Weyl nodes via magnetism and pressure in the ferromagnetic Weyl semimetal CeAlSi

Cheng,

Yan,

Shi

et al. 2024

Nat Commun

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Intrinsic magnetic topological materials

et al. 2023

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Pressure-tunable magnetic topological phases in magnetic topological insulator MnSb4Te7

Gao

et al. 2023

Applied Physics Letters

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Magnetic topological insulators (TIs), possessing both magnetic order and topological electronic structure, provides an excellent platform to research unusual physical properties. Here, we report a high-pressure study on the anomalous Hall effect of magnetic TI MnSb4Te7 through transports measurements combined with first-principle theoretical calculations. We discover that the ground state of MnSb4Te7 experiences a magnetic phase transition from the A-type antiferromagnetic state to ferromagnetic dominating state at 3.78 GPa, although its crystal sustains a rhombohedral phase under high pressures. The anomalous Hall conductance σxyA is dominated by intrinsic mechanism even after the magnetic phase transition. The results shed light on the intriguing magnetism in MnSb4Te7 and pave the way for further studies of the relationship between topology and magnetism in topological materials.

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Magnetization tunable Weyl states in EuB6

Cited by 13 publications

References 65 publications

Tunable positions of Weyl nodes via magnetism and pressure in the ferromagnetic Weyl semimetal CeAlSi

Tunable positions of Weyl nodes via magnetism and pressure in the ferromagnetic Weyl semimetal CeAlSi

Intrinsic magnetic topological materials

Pressure-tunable magnetic topological phases in magnetic topological insulator MnSb4Te7

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