HOT-PHONON-ASSISTED RESONANT-TUNNELING IN A QUANTUM-WELL

Citation
P. Kral et al., HOT-PHONON-ASSISTED RESONANT-TUNNELING IN A QUANTUM-WELL, Physical review. B, Condensed matter, 57(24), 1998, pp. 15428-15438
Citations number
42
Categorie Soggetti
Physics, Condensed Matter
ISSN journal
01631829
Volume
57
Issue
24
Year of publication
1998
Pages
15428 - 15438
Database
ISI
SICI code
0163-1829(1998)57:24<15428:HRIAQ>2.0.ZU;2-O
Abstract
We theoretically investigate dc electron resonant tunneling through an impurity state in a quantum well assisted by hot acoustical phonons. Numerical results for the tunneling current, obtained by nonequilibriu m Green functions, reflect the hot-phonon-induced change in the spectr um and population of the impurity state. The induced change of the I-V characteristics has a typical two-peak form, which for larger populat ions of the level becomes distorted by increased intralevel photon emi ssions. A qualitative agreement with experiments is obtained.