APS » PROLA » Phys. Rev. B » Volume 55 » Issue 16
< Previous article | Next article >

Phys. Rev. B 55, 10681 - 10687 (1997)

Nonlinear transport in GaAs/AlAs harmonically confined quantum wires

Download: PDF (201 kB) or Buy this Article (Use Article Pack) Export: BibTeX or EndNote (RIS)

I. C. da Cunha Lima
Instituto de Física, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier 524, 20550-013 Rio de Janeiro, Brazil
and Faculdade de Engenharia, Universidade São Francisco, Campus de Itatiba, 13257-900 Itatiba, São Paulo, Brazil

X.-F. Wang
Instituto de Física, Universidade do Estado do Rio de Janeiro, Rua São Franciso Xavier 524, 20550-013 Rio de Janeiro, Brazil
and Shanghai Institute of Metallurgy, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, China

X. L. Lei
Shanghai Institute of Metallurgy, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, China

The linear and nonlinear resistivities of GaAs/AlAs quantum wires under an applied magnetic field normal to the interfaces are obtained using the balance equation technique. Inelastic scattering by optic-confined and interface vibrational modes are analyzed. The observed sharp peaks in the linear resistivity showing phonon resonances in the scattering by bulk modes is broadened if this scattering is due to the GaAs confined modes. On the other hand, the AlAs-like interface modes add new peaks to the resistivity. The electron cooling effect is weakened at the magnetophonon resonance due to the greatly enhanced intersubband transition.


©1997 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevB.55.10681
DOI: 10.1103/PhysRevB.55.10681
PACS: 73.40.Kp, 72.20.Ht, 72.10.Di

[ Abstract  |  Previous article  |  Next article  |  Issue 16 ]