• Medientyp: E-Artikel
  • Titel: Longitudinal photocurrent spectroscopy of a single GaAs/AlGaAs v-groove quantum wire
  • Beteiligte: Cade, N. I. [VerfasserIn]; Hadjipanayi, M. [VerfasserIn]; Roshan, R. [VerfasserIn]; Maciel, A. C. [VerfasserIn]; Ryan, J. F. [VerfasserIn]; Macherey, F. [VerfasserIn]; Schäpers, T. [VerfasserIn]; Lüth, H. [VerfasserIn]
  • Erschienen: IOP Publ., 2005
  • Erschienen in: Nanotechnology 16, 307 - 311 (2005). doi:10.1088/0957-4484/16/2/023
  • Sprache: Englisch
  • DOI: https://doi.org/10.1088/0957-4484/16/2/023
  • ISSN: 0957-4484
  • Schlagwörter:
  • Entstehung:
  • Anmerkungen: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Beschreibung: Modulation-doped GaAs v-groove quantum wires (QWRs) have been fabricated with novel electrical contacts made to two-dimensional electron-gas (2DEG) reservoirs. Here, we present longitudinal photocurrent (photoconductivity/PC) spectroscopy measurements of a single QWR. We clearly observe conductance in the ground-state one-dimensional subbands; in addition, a highly temperature-dependent response is seen from other structures within the v-groove. The latter phenomenon is attributed to the effects of structural topography and localization on carrier relaxation. The results of power-dependent PC measurements suggest that the QWR behaves as a series of weakly interacting localized states, at low temperatures.
  • Zugangsstatus: Freier Zugang