Phase instability and electron-assisted renormalization of acoustic phonon spectrum in free-standing quantum wires

1999 ◽  
Vol 263-264 ◽  
pp. 522-525
Author(s):  
S.M. Komirenko ◽  
K.W. Kim ◽  
V.A. Kochelap ◽  
Mitra Dutta ◽  
Michael A. Stroscio
Keyword(s):  
Phonon Spectrum ◽  
Acoustic Phonon ◽  
Quantum Wires ◽  
Free Standing ◽  
Phase Instability

THE INFLUENCE OF ENVIRONMENTAL EFFECTS ON THE ACOUSTIC PHONON SPECTRA IN QUANTUM-DOT HETEROSTRUCTURES

2002 ◽  
Vol 12 (04) ◽  
pp. 1147-1158 ◽  
Author(s):  
SALVADOR RUFO ◽  
MITRA DUTTA ◽  
MICHAEL A. STROSCIO
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Environmental Effects ◽  
Phonon Spectrum ◽  
Acoustic Phonon ◽  
Matrix Material ◽  
Free Standing ◽  
Phonon Spectra ◽  
The Matrix ◽  
Selection Of

We present calculations of the acoustic phonon spectra for a variety of quantum dots and consider the cases where the quantum dots are both free-standing and embedded in a selection of different matrix materials — including semiconductors, plastic, and water. These results go beyond previous calculations for free-standing quantum dots and demonstrate that the matrix material can have a large effect on the acoustic phonon spectrum and consequently on a variety of phonon-assisted transitions in quantum-dot heterostructures.

Renormalization of acoustic phonon spectra and rudiments of the Peierls transition in free-standing quantum wires

1998 ◽  
Vol 58 (24) ◽  
pp. 16360-16368 ◽  
Author(s):  
S. M. Komirenko ◽  
K. W. Kim ◽  
M. A. Stroscio ◽  
V. A. Kochelap
Keyword(s):  
Acoustic Phonon ◽  
Quantum Wires ◽  
Free Standing ◽  
Phonon Spectra ◽  
Peierls Transition

scholarly journals Universality in electron–modulated-acoustic-phonon interactions in a free-standing semiconductor nanowire

2010 ◽  
Vol 51 (7-8) ◽  
pp. 880-887 ◽  
Author(s):  
Junichi Hattori ◽  
Shigeyasu Uno ◽  
Nobuya Mori ◽  
Kazuo Nakazato
Keyword(s):  
Acoustic Phonon ◽  
Free Standing ◽  
Semiconductor Nanowire

Acoustic Phonon Lifetimes and Thermal Transport in Free-Standing and Strained Graphene

Nano Letters ◽  
2012 ◽  
Vol 12 (6) ◽  
pp. 2673-2678 ◽  
Author(s):  
Nicola Bonini ◽  
Jivtesh Garg ◽  
Nicola Marzari
Keyword(s):  
Thermal Transport ◽  
Acoustic Phonon ◽  
Free Standing ◽  
Strained Graphene

ONE-PHONON-ASSISTED ELECTRON RESONANT RAMAN SCATTERING IN FREE-STANDING QUANTUM WIRES

2007 ◽  
Vol 21 (17) ◽  
pp. 2989-3000
Author(s):  
XIANG-FU ZHAO ◽  
CUI-HONG LIU
Keyword(s):  
Raman Scattering ◽  
Quantum Wire ◽  
Quantum Wires ◽  
Longitudinal Optical ◽  
Phonon Modes ◽  
Free Standing ◽  
Surface Optical ◽  
Resonant Raman ◽  
Resonant Raman Scattering ◽  
Valence Bands

The scattering intensity (SI) for an electron resonant Raman scattering (ERRS) process in a free-standing semiconductor quantum wire of cylindrical geometry associated with bulk longitudinal optical (LO) phonon modes or the surface optical (SO) phonon modes is calculated for T=0 K . The Fröhlich interaction is considered to illustrate the theory for a GaAs system. Electron states are confined within a free-standing quantum wire (FSW). Single parabolic conduction and valence bands are assumed. The selection rules are studied. Numerical results and a discussion are also presented for various radii of the cylindrical quantum wires.

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