Terahertz detection based on nonlinear Hall effect without magnetic field

Zhang, Yang; Fu, Liang

doi:10.1073/pnas.2100736118

Cited by 78 publications

(33 citation statements)

References 72 publications

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“…Electronic systems with substantial Berry curvatures and such low-symmetry crystalline content can exhibit a segregation of positive and negative regions of Berry curvature in momentum space leading to a net dipole moment. This Berry curvature dipole yields a quantum nonlinear Hall effect in timereversal symmetry conditions [82][83][84] : a non-linear electrodynamical phenomenon relevant for high-frequency rectification and long-wavelength photodetection 85 . Creating anisotropic mechanical deformations in gated bilayer graphene satisfies all the requirements for the existence of a sizable Berry curvature dipole.…”

Section: Quantum Nonlinear Hall Effectmentioning

confidence: 99%

Curved electronics: geometry-induced effects at the nanoscale

Gentile¹,

Cuoco²,

Volkov³

et al. 2022

Preprint

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Research into electronic nanomaterials has recently seen a growing focus into the synthesis of structures with unconventional curved geometries including bent wires in planar systems and three-dimensional architectures obtained by rolling up nanomembranes. The inclusion of these geometries has led to the prediction and observation of a series of novel effects that either result from shape-driven modifications of the electronic motion or from an intrinsic change of electronic and magnetic properties due to peculiar confinement effects. Moreover, local strains often generated by curvature also trigger the appearance of new phenomena due to the essential role played by electromechanical coupling in solids. Here we review the recent developments in the discovery of these shape-, confinement-and strain-induced curvature effects at the nanoscale, and discuss their potential use in electronic and spintronic devices.

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Section: Quantum Nonlinear Hall Effectmentioning

confidence: 99%

Curved electronics: geometry-induced effects at the nanoscale

Gentile¹,

Cuoco²,

Volkov³

et al. 2022

Preprint

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“…Although the absorption is limited by the excessive transmission energy loss and complex drift path of carriers, the configuration based on Hall effect can provide a feasible design approach in ultrafast full-spectrum photoelectric devices with high responsivity. [251,252] Recently, Weyl semimetal materials like NbP and TaIrTe 4 have also been used for rectification in the THz field, [253,254] which can generate a strong Hall voltage without constructing vertical magnetic field due to the existence of Berry curvature dipole and nonlinear Hall effect, resulting in greatly simplified design. The operating frequency range can be extended from THz to radio frequency.…”

Section: Mms-based Pc In Thz Rangementioning

confidence: 99%

Metamaterials‐Based Photoelectric Conversion: From Microwave to Optical Range

Chai

Wang

Chen

et al. 2021

Laser & Photonics Reviews

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Photoelectric conversion (PC) is an essential process for the devices based on the utilization of electrical signals, such as solar cells, sensors, imaging, and communication. As an emerging research field, great advances are made in the PC devices based on the metamaterials (MMs) hitherto. The MMs exhibit unique electromagnetic resonance properties, which can be used for perfect absorbers and are promising for efficient PC from microwave to optical range, though the absorption mechanism varies with the waveband. Perfect absorption in the microwave is mainly induced by the electromagnetic polariton resonance, and surface plasmon resonance (SPR) becomes dominant as the frequency approaches to optical band. Thus, the MMs-based photoelectric devices are realized via an electronic approach in the microwave band, and are based on the SPR-induced hot carriers in the optical band. Since terahertz wave falls between the microwave and optical band, terahertz photoelectric devices exhibit unique characteristic different from the electronics and optics, while still bear similarity to both of them, which is dependent on the frequency. Hence, this review covers major advances in the aspects of fundamentals and engineering for the MMs-based photoelectric devices from microwave to optical range.

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“…The BCD and the unconventional NHE drive the understanding of topological physics and quantum transport phenomena to the nonlinear domain. This generalization opens up many exciting prospects for direct applications, such as nonlinear photocurrents [27] and terahertz radiation detection [28].…”

Section: Introductionmentioning

confidence: 99%

Electrically switchable giant Berry curvature dipole in silicene, germanene and stanene

Jana¹,

Joseph²,

Narayan³

2022

Preprint

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The anomalous Hall effect in time-reversal symmetry broken systems is underpinned by the concept of Berry curvature in band theory. However, recent experiments reveal that the nonlinear Hall effect can be observed in non-magnetic systems without applying an external magnetic field. The emergence of nonlinear Hall effect under time-reversal symmetric conditions can be explained in terms of non-vanishing Berry curvature dipole arising from inversion symmetry breaking. In this work, we availed realistic tight-binding models, first-principles calculations, and symmetry analyses to explore the combined effect of transverse electric field and strain, which leads to a giant Berry curvature dipole in the elemental buckled honeycomb lattices -silicene, germanene, and stanene. The external electric field breaks the inversion symmetry of these systems, while strain helps to attain an asymmetrical distribution of Berry curvature of a single valley. Furthermore, the topology of the electronic wavefunction switches from the band inverted quantum spin Hall state to normal insulating one at the gapless point. This band gap closing at the critical electric field strength is accompanied by an enhanced Berry curvature and concomitantly a giant Berry curvature dipole at the Fermi level. Our results predict the occurrence of an electrically switchable nonlinear electrical and thermal Hall effect in a new class of elemental systems that can be experimentally verified.

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Terahertz detection based on nonlinear Hall effect without magnetic field

Cited by 78 publications

References 72 publications

Curved electronics: geometry-induced effects at the nanoscale

Curved electronics: geometry-induced effects at the nanoscale

Metamaterials‐Based Photoelectric Conversion: From Microwave to Optical Range

Electrically switchable giant Berry curvature dipole in silicene, germanene and stanene

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