Tunneling current through a quantum dot with strong electron-phonon interaction

2002 ◽  
Vol 66 (8) ◽  
Author(s):  
David M.-T. Kuo ◽  
Y. C. Chang
Keyword(s):  
Quantum Dot ◽  
Tunneling Current ◽  
Phonon Interaction ◽  
Strong Electron ◽  
Electron Phonon Interaction

THE INFLUENCE OF ELECTRIC FIELD ON THE GROUND-STATE LIFETIME OF POLARON IN A PARABOLIC QUANTUM DOT

2011 ◽  
Vol 25 (03) ◽  
pp. 203-210
Author(s):  
WEI-PING LI ◽  
JI-WEN YIN ◽  
YI-FU YU ◽  
JING-LIN XIAO
Keyword(s):  
Quantum Dot ◽  
Electric Field ◽  
Ground State Energy ◽  
Ground State ◽  
State Energy ◽  
Phonon Coupling ◽  
Phonon Interaction ◽  
Strong Electron ◽  
Electron Phonon Interaction ◽  
Parabolic Quantum Dot

The ground-state energy of polaron was obtained with strong electron-LO-phonon coupling by using a variational method of the Pekar type in a parabolic quantum dot (QD). Quantum transition occurs in the quantum system due to the electron-phonon interaction and the influence of temperature. That is the polaron transition from the ground-state to the first-excited state after absorbing a LO-phonon and it causes the changing of the polaron lifetime. Numerical calculations are performed and the results illustrate the relations of the ground-state lifetime of the polaron on the ground-state energy of polaron, the electric field strength, the temperature, the electron-LO-phonon coupling strength and the confinement length of the quantum dot.

THE TRANSITION RATE OF THE GROUND STATE OF POLARON IN A PARABOLIC QUANTUM DOT

2009 ◽  
Vol 23 (23) ◽  
pp. 2745-2753 ◽  
Author(s):  
WEI-PING LI ◽  
JI-WEN YIN ◽  
YI-FU YU ◽  
JING-LIN XIAO ◽  
ZI-WU WANG
Keyword(s):  
Quantum Dot ◽  
Ground State Energy ◽  
Ground State ◽  
Transition Rate ◽  
State Energy ◽  
Phonon Coupling ◽  
Phonon Interaction ◽  
Strong Electron ◽  
Electron Phonon Interaction ◽  
Parabolic Quantum Dot

The ground-state energy of polaron was obtained with strong electron-LO-phonon coupling by using a variational method of the Pekar type in a parabolic quantum dot (QD). Quantum transition occurred in the quantum system due to the electron–phonon interaction and the influence of temperature. That is, the polaron transits from the ground state to the first excited state after absorbing a LO-phonon. Numerical calculations are performed and the results illustrate the relations of the transition rate of the polaron on the ground-state energy of polaron, the cyclotron frequency parameter, the Coulomb binding parameter, the temperature, the electron-LO-phonon coupling strength and the confinement length of the quantum dot.

Optical Spectroscopic Studies of a Soluble Fluorene-Based Conjugated Polymer: A Hydrostatic Pressure and Temperature Study

2001 ◽  
Vol 708 ◽  
Author(s):  
S. Guha ◽  
J.D. Rice ◽  
C. M. Martin ◽  
W. Graupner ◽  
M. Chandrasekhar ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
Conjugated Polymer ◽  
Spectroscopic Properties ◽  
Spectroscopic Studies ◽  
Phonon Interaction ◽  
Optical Studies ◽  
Strong Electron ◽  
Conjugated Molecules ◽  
Electron Phonon Interaction ◽  
Backbone Conformation

ABSTRACTSpectroscopic properties of conjugated molecules/polymers have varying degrees of sensitivity to backbone conformation. Optical studies are presented as a function of temperature and hydrostatic pressure, using photoluminescence and Raman scattering from two polymers with distinct differences in their backbone conformation, namely, polyfluorene (PF) and ladder type poly(para-phenylene)(m-LPPP). In contrast to the photoluminescence (PL) vibronics in mLPPP, the 0-0 PL vibronic peak in PF shows a red-shift with increasing temperatures. Pressure studies reveal that the PL spectrum of PF red-shifts and broadens with increasing pressures. The phonon lines in PF show an antiresonance effect at higher pressures indicating a strong electron-phonon interaction.

scholarly journals Single-Electron-Phonon Interaction in a Suspended Quantum Dot Phonon Cavity

2004 ◽  
Vol 92 (4) ◽  
Author(s):  
E. M. Weig ◽  
R. H. Blick ◽  
T. Brandes ◽  
J. Kirschbaum ◽  
W. Wegscheider ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Single Electron ◽  
Phonon Interaction ◽  
Electron Phonon Interaction

Evidence of strong electron-phonon interaction in a GaN-based quantum cascade emitter

2020 ◽  
Vol 145 ◽  
pp. 106631
Author(s):  
Daniel Hofstetter ◽  
Hans Beck ◽  
John E. Epler ◽  
Lutz Kirste ◽  
David P. Bour
Keyword(s):  
Phonon Interaction ◽  
Strong Electron ◽  
Quantum Cascade ◽  
Electron Phonon Interaction
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