scholarly journals STRONG COUPLING POLARON WITHIN POLAR CRYSTAL SLAB IN A MAGNETIC FIELD

1997 ◽  
Vol 46 (4) ◽  
pp. 715
Author(s):  
HUANG ZHUO-HE ◽  
CHEN CHUAN-YU ◽  
LIANG SHI-DONG
Keyword(s):  
Magnetic Field ◽  
Strong Coupling ◽  
Polar Crystal

scholarly journals On the dynamics of polarons in the strong-coupling limit

2017 ◽  
Vol 29 (10) ◽  
pp. 1750030 ◽  
Author(s):  
Marcel Griesemer
Keyword(s):  
Strong Coupling ◽  
Longitudinal Optical ◽  
Strong Coupling Limit ◽  
Poisson System ◽  
Phonon Modes ◽  
Polar Crystal ◽  
Effective Dynamics ◽  
Optical Modes ◽  
Non Local ◽  
With Memory

The polaron model of H. Fröhlich describes an electron coupled to the quantized longitudinal optical modes of a polar crystal. In the strong-coupling limit, one expects that the phonon modes may be treated classically, which leads to a coupled Schrödinger–Poisson system with memory. For the effective dynamics of the electron, this amounts to a nonlinear and non-local Schrödinger equation. We use the Dirac–Frenkel variational principle to derive the Schrödinger–Poisson system from the Fröhlich model and we present new results on the accuracy of their solutions for describing the motion of Fröhlich polarons in the strong-coupling limit. Our main result extends to [Formula: see text]-polaron systems.

The Influence of the Phonon Dispersion and a Magnetic Field on the Self-Trapping Energy of the Polaron in a Polar Crystal

2015 ◽  
Vol 21 (1) ◽  
pp. 64-68
Author(s):  
冀文慧 JI Wen-hui ◽  
杨洪涛 YANG Hong-tao ◽  
呼和满都拉 HUHEMANDULA ◽  
胡文弢 HU Wen-tao
Keyword(s):  
Magnetic Field ◽  
Phonon Dispersion ◽  
The Self ◽  
Polar Crystal ◽  
Self Trapping

Strong Coupling and the SuperfluidHe3A−BTransition in a Magnetic Field

1981 ◽  
Vol 47 (6) ◽  
pp. 428-431 ◽  
Author(s):  
J. D. Feder ◽  
D. O. Edwards ◽  
W. J. Gully ◽  
K. A. Muething ◽  
H. N. Scholz
Keyword(s):  
Magnetic Field ◽  
Strong Coupling

INFLUENCE OF LATTICE VIBRATION ON THE GROUND STATE OF MAGNETOPOLARON IN A PARABOLIC QUANTUM DOT

2010 ◽  
Vol 24 (27) ◽  
pp. 2705-2712 ◽  
Author(s):  
EERDUNCHAOLU ◽  
WEI XIN ◽  
YUWEI ZHAO
Keyword(s):  
Magnetic Field ◽  
Strong Coupling ◽  
Ground State Energy ◽  
Vibration Frequency ◽  
Ground State ◽  
Weak Coupling ◽  
State Energy ◽  
Cyclotron Frequency ◽  
Lattice Vibration ◽  
The Magnetic Field

Influence of the lattice vibration on the properties of the magnetopolaron in the parabolic quantum dots (QDs) is studied by using the Huybrechts' linear combination operator and Lee–Low–Pines (LLP) transformation methods. The expressions for the vibration frequency and the ground-state energy of the magnetopolaron as functions of the confinement strength of the QDs, the magnetic field and temperature are derived under the strong and weak coupling, respectively. The results of the numerical calculations show that the changes of the vibration frequency and ground-state energy of the magnetopolaron with the confinement strength of the QDs, the magnetic field and temperature are different under different couplings. The vibration frequency and the ground-state energy of the weak-coupling magnetopolaron and the vibration frequency of the strong-coupling magnetopolaron will increase with increase of the confinement strength of the QDs and cyclotron frequency, the vibration frequency and ground-state energy of the strong-coupling magnetopolaron. However, the ground-state energy of the weak-coupling magnetopolaron will decrease with increase of the temperature. The dependence of the ground-state energy of the strong-coupling magnetopolaron on the confinement strength of the QDs and cyclotron frequency is strongly influenced by the temperature. The remarkable influence of the temperature on the ground-state energy of the magnetopolaron arises when the temperature is relatively higher.

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