AI 中文总结
该研究针对低维物理中一维系统电子-电子相互作用的理解难题，利用垂直耦合GaAs-AlGaAs量子线，通过库仑拖曳测量实现相对Luttinger液体相互作用参数的自洽确定，揭示了库仑拖曳的温度驱动转变，建立了探测一维电子相互作用的定量框架。
AI 中文摘要
深化一维系统中电子-电子相互作用的理解仍是低维物理的核心挑战，尤其针对库仑耦合的Tomonaga-Luttinger液体；可靠提取一维系统参数的难度结合无序的存在，阻碍了一维库仑拖曳实验的解读。本文通过一维库仑拖曳测量自洽确定相对Luttinger液体相互作用参数，与理论预测实现定量吻合；利用垂直耦合的GaAs-AlGaAs量子线，通过磁耗尽完全表征一维参数，库仑拖曳随磁场呈系统演化，反映一维子带的连续耗尽与无序效应的抑制，确定两个不同温度区间，标志动量分辨与无序平均库仑拖曳的边界；观测到的标度、峰展宽及非线性电流-电压特性，建立了探测一维系统电子-电子相互作用的统一定量框架。
英文摘要
Advancing the understanding of electron-electron interactions in one-dimensional systems remains one of the central challenges in low-dimensional physics, especially for Coulomb-coupled Tomonaga-Luttinger liquids. Notably, the difficulty of reliably extracting one-dimensional system parameters, combined with the presence of disorder, has hindered the interpretation of 1D Coulomb drag experiments. Here, we present a self-consistent experimental determination of the relative Luttinger liquid interaction parameters through 1D Coulomb drag measurements, and achieve quantitative agreement with theoretical predictions. Utilizing vertically coupled GaAs-AlGaAs quantum wires, we fully characterize the one-dimensional parameters through magnetic depopulation. Coulomb drag exhibits a systematic evolution with magnetic field, reflecting the successive depopulation of 1D subbands and the suppression of disorder effects. Two distinct temperature regimes are identified, marking the boundary between momentum-resolved and disordered-averaged Coulomb drag. The observed scaling, peak broadening, and nonlinear current-voltage characteristics establish a unified and quantitative framework for probing electron-electron interactions in 1D systems.
Comments22 pages, 5 figures
