Experimental investigation of the ratchet effect in a two-dimensional electron system with broken spatial inversion symmetry
arXiv:0802.4250 · doi:10.1103/PhysRevB.78.045431
Abstract
We report on experimental evidence of directed electron transport, induced by external linear-polarized microwave irradiation, in a two-dimensional spatially-periodic asymmetrical system called ratchet. The broken spatial symmetry was introduced in a high mobility two-dimensional electron gas based on AlGaAs/GaAs heterojunction, by patterning an array of artificial semi-discs-shaped antidots. We show that the direction of the transport is efficiently changed by microwave polarization. The dependence of the effect on magnetic field and temperature is investigated. This represents a significant step towards the realization of new microwave detectors and current generators.
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Cited by in corpus (8)
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- Terahertz ratchet in graphene 2D metamaterial formed by a patterned gate with an antidot arrayd
- Terahertz spin ratchet effect in magnetic metamaterials
- Mesoscopic Diffusion Thermopower in Two-Dimensional Electron Gases
- Symmetry breaking for ratchet transport in presence of interactions and magnetic field
- Skew scattering and ratchet effect in photonic graphene