2008/04/30 by Arkadius Ganczarczyk, A. Ganczarczyk, S. Rojek +14 · 1 citation
Chemistry · Engineering · Physics and Astronomy · #Chemistry #Condensed matter physics #Electron #Electron density #Engineering #Fermi gas #Geometry #Materials science #Modulation (music) #Optoelectronics #Perpendicular #Physics #Physics of Superconductivity and Magnetism #Polarity (international relations) #Quantum and electron transport phenomena #Rectification #Semiconductor Quantum Structures and Devices #Transverse plane #Voltage #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.86.085309
8 pages, 9 figures, published in PRB
openalex publication_date 2012/08/15 · arxiv created 2012/11/16 · arxiv updated 2012/11/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We demonstrate tunable transverse rectification in a density-modulated two-dimensional electron gas (2DEG). The density modulation is induced by two surface gates, running in parallel along a narrow stripe of 2DEG. A transverse voltage in the direction of the density modulation is observed, i.e., perpendicular to the applied source-drain voltage. The polarity of the transverse voltage is independent of the polarity of the source-drain voltage, demonstrating rectification in the device. We find that the transverse voltage Uy depends quadratically on the applied source-drain voltage and nonmonotonically on the density modulation. The experimental results are discussed in the framework of a diffusion thermopower model.