Electron transport in modulation-doped GaAs v-groove quantum wires

A study of the ground state of quantum wires using the finite difference method

“…Using the binding energy of Rinaldi et al's [7] we have evaluated the first electron-heavy hole transition at an energy E = 1588 meV close to the experimentally observed (E = 1582 meV) [19].…”

“…We have evaluated the ground state energy using the same structural parameters as the above systems and compare our results with the results presented in Refs [1,7] and [19].…”

“…Schwarz et al [19] have studied electron transport in modulation-doped GaAs V-groove QWRs and using photoluminescence experiments revealed one-and two-dimensional confined states.…”

“…This value presents a deviation from the observed peak (1646 meV). This can be reasonably explained noticing that the value of 12 meV for the binding energy refers to a Y = 100 Å QWR [7] and it is expected to be larger for the specific wires of Y = 55 Å [1] and Y = 76 Å [19], respectively. Taking E bind = 15 meV from Deng et al [8] we have evaluated E = 1656 meV.…”

“…[19] where Y = 76 Å we have applied the above conclusions taking x 0 = 220 Å, n tot = 1711, n ext = 2, and Y = 76 Å. We have found the electron ground state energy to be E el = 61 meV.…”