Anomalous Hall effect in one monolayer cobalt with electrical manipulation

Song, Cheng; Miao, Jiao; Li, F.; Yan, Yufan; Cui, Bin; Pan, Feng

doi:10.1016/j.jallcom.2016.11.313

Cited by 4 publications

(1 citation statement)

References 43 publications

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“…To avoid the extra etching process, the samples which were relatively long and narrow were located by optical microscope (Carl Zeiss Imager.A2 Vario with AxioCam HRc), and then their thicknesses were confirmed by atomic force microscope (Asylum Research MFP-3D) using tapping mode. After that, 0.8 nm Ti was evaporated onto the samples using ebeam evaporator, and then they were exposed in air for 0.5 h to form an oxidation layer (the TiO X layer not only plays a role of tunneling layer to conquer the conductance mismatch problem but also prevents the sample from reacting with ionic liquid) [53]. Subsequently, six electrodes were fabricated for each sample using e-beam lithography (EBL) and followed e-…”

Section: Methodsmentioning

confidence: 99%

Spin transport in multilayer graphene away from the charge neutrality point

Wen²,

Zhang³

et al. 2021

Carbon

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Graphene is considered as a promising material in spintronics due to its long spin relaxation time and long spin relaxation length. However, its spin transport properties have been studied at low carrier density only, beyond which much is still unknown. In this study, we explore the spin transport and spin precession properties in multilayer graphene at high carrier density using ionic liquid gating. We find that the spin relaxation time is directly proportional to the momentum relaxation time, indicating that the Elliott-Yafet mechanism still dominates the spin relaxation in multilayer graphene away from the charge neutrality point.

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Section: Methodsmentioning

confidence: 99%

Spin transport in multilayer graphene away from the charge neutrality point

Wen²,

Zhang³

et al. 2021

Carbon

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Tunable Anomalous Hall Effect in a Kagomé Ferromagnetic Weyl Semimetal

Pate,

Wang,

Zhang

et al. 2024

Advanced Science

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Emerging from the intricate interplay of topology and magnetism, the giant anomalous Hall effect (AHE) is the most known topological property of the recently discovered kagomé ferromagnetic Weyl semimetal Co3Sn2S2 with the magnetic Co atoms arranged on a kagomé lattice. Here it is reported that the AHE in Co3Sn2S2 can be fine‐tuned by an applied magnetic field orientated within ≈2° of the kagomé plane, while beyond this regime, it stays unchanged. Particularly, it can vanish in magnetic fields parallel to the kagomé plane and even decrease in magnetic fields collinear with the spin direction. This tunable AHE can be attributed to local spin switching enabled by the geometrical frustration of the magnetic kagomé lattice, revealing that spins in a kagomé ferromagnet change their switching behavior as the magnetic field approaches the kagomé plane. These results also suggest a versatile way to tune the properties of a kagomé magnet.

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