Tunable interaction between excitons and hybridized magnons in a layered semiconductor

Diederich, Geoffrey; Cenker, John; Ren, Yafei; Fonseca, Jordan; Chica, Daniel G.; Bae, Youn Jue; Zhu, Xiaoyang; Roy, Xavier; Cao, Ting; Xiao, Di; Xu, Xiaodong

doi:10.1038/s41565-022-01259-1

Cited by 48 publications

(33 citation statements)

References 33 publications

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“…For bilayer CrSBr, we use J = 0.013 meV, A b = 0.014 meV, and A c = 0.038 meV obtained from DFT calculations, which are consistent with those fitted from experiments eq as shown above.…”

Section: Resultssupporting

confidence: 71%

Engineering Magnetic Phases of Layered Antiferromagnets by Interfacial Charge Transfer

Xie,

Zhang,

Xiao

et al. 2023

ACS Nano

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Van der Waals heterostructures composed of distinct layered materials can display behaviors entirely different from those of each individual layer due to interfacial coupling. Here we investigate the manipulation of magnetic phases in two-dimensional magnets through interfacial charge transfer in heterostructures of magnetic and nonmagnetic layers. This is demonstrated by first-principles calculations, which unveil a transition toward the ferromagnetic phase by stacking antiferromagnetic bilayer CrSBr on graphene. Using an effective model consisting of two electronically coupled single layers, we show that the antiferromagnetic to ferromagnetic magnetic phase transition occurs due to interfacial charge transfer, which enhances ferromagnetism. We further reveal that the magnetic phase transition can also be induced by electron and hole carriers and demonstrate that the phase transition is a spin-canting process. This allows for precise gate-control of noncollinear magnetism on demand. Our work predicts interfacial charge transfer as a potent mechanism to tune magnetic phases in van der Waals heterostructures and creates opportunities for spintronic applications.

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“…For bilayer CrSBr, we use J = 0.013 meV, A b = 0.014 meV, and A c = 0.038 meV obtained from DFT calculations, which are consistent with those fitted from experiments eq as shown above.…”

Section: Resultssupporting

confidence: 71%

Engineering Magnetic Phases of Layered Antiferromagnets by Interfacial Charge Transfer

Xie,

Zhang,

Xiao

et al. 2023

ACS Nano

Self Cite

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“…The PCC is placed on a flexible substrate, which can be elongated and compressed using the strain cell. This configuration was adapted from a prior work to study strain-dependent properties of bulk crystals − and magnetic properties in the vdW material. , Three piezoelectric actuators are attached parallel to a titanium backing plate and a titanium flexure element. The flexure element consists of a W-shaped outer piece and a rectangular inner block, with a 0.5 mm gap (Figure c, bottom panel).…”

Section: Setup and Simulationsmentioning

confidence: 99%

Cryo-Compatible In Situ Strain Tuning of 2D Material-Integrated Nanocavity

et al. 2023

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Tunable nanophotonic resonators are an essential building block for material-integrated photonic systems and solidstate cavity quantum electrodynamic experiments. Matching the cavity resonance with the material optical transition is crucial for enhancing the light−matter interaction, leading to various associated phenomena that have important implications in quantum optics and optoelectronics. However, our inability to precisely control the resonant wavelength of nanofabricated optical cavities necessitates the use of postfabrication dynamical tuning, which is a challenging prospect, especially in cryogenic environments required for various quantum optical effects. Here, we realize a large in situ strain tuning of an integrated monolayer WSe 2 −gallium phosphide cavity device. We demonstrated tuning an on-substrate cavity with a quality (Q)-factor of ∼3500 at ∼780 nm by ∼5 nm without any degradation of the Q-factor at cryogenic temperature. The tunable cavity modes are manifested as cavity-enhanced monolayer exciton photoluminescence.

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Section: Excitons In Semiconductorsmentioning

confidence: 99%