Research paperExperimental CharacterizationNonreciprocal Coulomb Drag between Quantum Wires in the quasi-1D regimeR. Makaju, H. Kassar, S. M. Daloglu, A. Huynh et al.arXiv preprint·2024·10.1103/PhysRevB.109.085101·arXiv:2310.13626AbstractCoulomb drag experiments have been an essential tool to study strongly interacting low-dimensional systems. Here, we report Coulomb drag measurements between laterally coupled GaAs/AlGaAs quantum wires in the multiple 1D sub-band regime that break Onsager’s reciprocity upon both layer and current direction reversal, in contrast to prior 1D Coulomb drag results. The drag signal shows nonlinear current-voltage characteristics, which are well characterized by a third-order polynomial fit. These findings are qualitatively consistent with a rectified drag signal induced by charge fluctuations, but the nonmonotonic temperature dependence suggests that strong electron-electron interactions remain important.Read more
Laterally coupled GaAs/AlGaAs quantum-wire device with top, middle, and bottom gates and evaporated Ge-Au-Ni-Au ohmic contacts.2 characterizations9 properties3 figuresExperimentalGaAsStudied MaterialAlGaAsStudied MaterialGeCapping Or ContactAuCapping Or ContactNiCapping Or ContactExpand
Research paperExperimental CharacterizationNonreciprocal Coulomb Drag between Quantum Wires in the quasi-1D regimeR. Makaju, H. Kassar, S. M. Daloglu, A. Huynh et al.arXiv preprint·2024·10.1103/PhysRevB.109.085101·arXiv:2310.13626AbstractCoulomb drag experiments have been an essential tool to study strongly interacting low-dimensional systems. Here, we report Coulomb drag measurements between laterally coupled GaAs/AlGaAs quantum wires in the multiple 1D sub-band regime that break Onsager’s reciprocity upon both layer and current direction reversal, in contrast to prior 1D Coulomb drag results. The drag signal shows nonlinear current-voltage characteristics, which are well characterized by a third-order polynomial fit. These findings are qualitatively consistent with a rectified drag signal induced by charge fluctuations, but the nonmonotonic temperature dependence suggests that strong electron-electron interactions remain important.Read more
Laterally coupled GaAs/AlGaAs quantum-wire device with top, middle, and bottom gates and evaporated Ge-Au-Ni-Au ohmic contacts.2 characterizations9 properties3 figuresExperimentalGaAsStudied MaterialAlGaAsStudied MaterialGeCapping Or ContactAuCapping Or ContactNiCapping Or ContactExpand
Research paperExperimental CharacterizationNonreciprocal Coulomb Drag between Quantum Wires in the quasi-1D regimeR. Makaju, H. Kassar, S. M. Daloglu, A. Huynh et al.arXiv preprint·2024·10.1103/PhysRevB.109.085101·arXiv:2310.13626AbstractCoulomb drag experiments have been an essential tool to study strongly interacting low-dimensional systems. Here, we report Coulomb drag measurements between laterally coupled GaAs/AlGaAs quantum wires in the multiple 1D sub-band regime that break Onsager’s reciprocity upon both layer and current direction reversal, in contrast to prior 1D Coulomb drag results. The drag signal shows nonlinear current-voltage characteristics, which are well characterized by a third-order polynomial fit. These findings are qualitatively consistent with a rectified drag signal induced by charge fluctuations, but the nonmonotonic temperature dependence suggests that strong electron-electron interactions remain important.Read more
Laterally coupled GaAs/AlGaAs quantum-wire device with top, middle, and bottom gates and evaporated Ge-Au-Ni-Au ohmic contacts.2 characterizations9 properties3 figuresExperimentalGaAsStudied MaterialAlGaAsStudied MaterialGeCapping Or ContactAuCapping Or ContactNiCapping Or ContactExpand
Research paperExperimental CharacterizationNonreciprocal Coulomb Drag between Quantum Wires in the quasi-1D regimeR. Makaju, H. Kassar, S. M. Daloglu, A. Huynh et al.arXiv preprint·2024·10.1103/PhysRevB.109.085101·arXiv:2310.13626AbstractCoulomb drag experiments have been an essential tool to study strongly interacting low-dimensional systems. Here, we report Coulomb drag measurements between laterally coupled GaAs/AlGaAs quantum wires in the multiple 1D sub-band regime that break Onsager’s reciprocity upon both layer and current direction reversal, in contrast to prior 1D Coulomb drag results. The drag signal shows nonlinear current-voltage characteristics, which are well characterized by a third-order polynomial fit. These findings are qualitatively consistent with a rectified drag signal induced by charge fluctuations, but the nonmonotonic temperature dependence suggests that strong electron-electron interactions remain important.Read more
Laterally coupled GaAs/AlGaAs quantum-wire device with top, middle, and bottom gates and evaporated Ge-Au-Ni-Au ohmic contacts.2 characterizations9 properties3 figuresExperimentalGaAsStudied MaterialAlGaAsStudied MaterialGeCapping Or ContactAuCapping Or ContactNiCapping Or ContactExpand
