Optical-phonon modes and Fröhlich potential in one-dimensional quantum-well wires

1991 ◽  
Vol 44 (4) ◽  
pp. 1926-1929 ◽  
Author(s):  
Bang-fen Zhu
Keyword(s):  
Quantum Well ◽  
Optical Phonon ◽  
Phonon Modes ◽  
One Dimensional ◽  
Quantum Well Wires

DISPERSIONS AND FRÖHLICH ELECTRON–PHONON INTERACTION HAMILTONIAN OF PROPAGATING OPTICAL PHONON MODES IN QUASI-ONE-DIMENSIONAL WURTZITEGaN-BASED QUANTUM WELL WIRES

2007 ◽  
Vol 14 (05) ◽  
pp. 903-910 ◽  
Author(s):  
L. ZHANG ◽  
HONG-JING XIE
Keyword(s):  
Quantum Well ◽  
Quantum Wells ◽  
Optical Phonon ◽  
Detailed Comparison ◽  
Continuous Functions ◽  
Uniaxial Crystal ◽  
Phonon Modes ◽  
Phonon Interaction ◽  
One Dimensional ◽  
Quantum Well Wire

Based on the dielectric continuum model and Loudon's uniaxial crystal model, the propagating (PR) optical phonon modes and the Fröhlich-like electron–PR phonon interaction Hamiltonian in a quasi-one-dimensional (Q1D) wurtzite quantum well wire (QWW) structure are deduced and analyzed. Numerical calculations on AlGaN / GaN / AlGaN wurtzite QWW are performed. Results reveal that the dispersive frequencies of PR modes are the continuous functions of free wavenumber kzin z-direction and discrete functions of azimuthal quantum number m. The reduced behavior of the PR modes in wurtzite quantum systems is obviously observed. From the discussion of the electron–PR phonon coupling functions, it is found that the low-order PR modes in the case of small kzand m play a more important role in the electron–PR phonon interactions. Moreover, a detailed comparison of the PR modes in Q1D QWW structures with those in quasi-two-dimensional quantum wells are also carried out. The physical reasons resulting in the relationship and distinction in the two types of systems are also analyzed deeply.

Magnetopolarons in quasi-one-dimensional quantum-well wires

1993 ◽  
Vol 5 (27) ◽  
pp. 4817-4828 ◽  
Author(s):  
L Wendler ◽  
A V Chaplik ◽  
O Hipolito
Keyword(s):  
Quantum Well ◽  
One Dimensional ◽  
Quantum Well Wires

Subbands and correlation effects on plasmon-excitations in quasi-one-dimensional quantum-well wires

1993 ◽  
Vol 13 (1) ◽  
pp. 51-54 ◽  
Author(s):  
Antonio Newton Borges ◽  
Marcos H. Degani ◽  
Oscar Hipólito
Keyword(s):  
Quantum Well ◽  
Correlation Effects ◽  
One Dimensional ◽  
Quantum Well Wires
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