نتایج جستجو برای: dimensional electron gas
تعداد نتایج: 911307 فیلتر نتایج به سال:
We study the anomalous Hall conductivity in spin-polarized, asymmetrically confined two-dimensional electron and hole systems, taking into account the intrinsic, side-jump, and skew-scattering contributions to the transport. We find that the skew scattering, principally responsible for the extrinsic contribution to the anomalous Hall effect, vanishes for the two-dimensional electron system if b...
A linear response theory is provided for the dynamic interaction effects of an electron soliton confined in semiconductor quantum well with a conducting surface or a two-dimensional electron gas. It is shown that the soliton-electron-gas effective potential contains a dissipative component resisting against changes of the soliton charge density. Due to the energy dissipation moving solitons are...
We measure the energy distribution of electrons passing through a two-dimensional electron gas using a scanning probe microscope. We present direct spatial images of coherent electron wave flow from a quantum point contact formed in a GaAs/AlGaAs two-dimensional electron gas using a liquid He cooled SPM. A negative voltage is placed on the tip, which creates a small region of depleted electrons...
Low-temperature photoluminescence-excitation spectra are studied in an n-type modulation-doped T-shaped single quantum wire with a gate to tune electron densities. With a nondegenerate one-dimensional (1D) electron gas, the band-edge absorption exhibits a sharp peak structure induced by the 1D density of states. When the dense 1D electron gas is degenerate at a low temperature, we observe a Fer...
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