POLARON PROPERTIES OF THE WANNIER EXCITON IN A QUANTUM-WELL CONFINEMENT

1989-03-20
On the basis of a perturbative-variational approach, the polaron effect on the ground-state energy of the two-dimensionally confined exciton is analysed in the overall range of the parameters characterising the problem. With particular attention devoted to the GaAs-based quantum structure, it is seen that the photon-induced effects on the binding are rather noticeable and should not be ignored.
JOURNAL OF PHYSICS-CONDENSED MATTER

Suggestions

WEAK-COUPLING OPTICAL POLARON IN QW-CONFINED MEDIA
YILDIRIM, T; Erçelebi, Ayşe Çiğdem (IOP Publishing, 1991-06-17)
The ground state of the Frohlich polaron is retrieved as a function of the degree of confinement in a three-dimensional quantum well with tunable barrier potentials. A unified overview of the binding energy interpolating between all possible confinement geometries is provided within the framework of the second-order perturbation theory.
Slip-flow heat transfer in microtubes with axial conduction and viscous dissipation - An extended Graetz problem
Cetin, Barbaros; Güvenç Yazıcıoğlu, Almıla; KAKAÇ, SADIK (Elsevier BV, 2009-09-01)
This study is an extension of the Graetz problem to include the rarefaction effect, viscous dissipation term and axial conduction with constant-wall-heat-flux thermal boundary condition. The energy equation is solved analytically by using general eigenfunction expansion. The temperature distribution and the local Nusselt number are determined in terms of confluent hypergeometric functions. The effects of the rarefaction, axial conduction and viscous dissipation on the local Nusselt number are discussed in t...
Polaron effects on the binding energy of a hydrogenic impurity in a semiconductor quantum well
Ercelebi, A; Sualp, G (IOP Publishing, 1987-11-30)
The polaron effect on the ground-state level of a hydrogenic impurity in a semiconductor quantum well is calculated as a function of the well thickness. The formulation is based on an extension of the strong-coupling polaron theory and covers the overall range of the electron-phonon coupling strength. It is observed that in a GaAs-based quantum structure the phonon-induced shift in the binding energy is smaller than that in the bulk case except for too narrow well sizes.
Temperature dependence of magnetic and thermal properties of chiral HyFe and HyMn close to phase transitions by using the Landau mean field model
Tari, Ozlem; Yurtseven, Hasan Hamit (Elsevier BV, 2019-04-15)
Magnetic and thermal properties of chiral metal formate frameworks (MOFs) of NH2NH3M(HCOO)(3), M = Fe, Mn, namely, HyFe and HyMn are investigated close to phase transitions by using Landau phenomenological model. By expanding the free energy in terms of the order parameter, for magnetic properties the temperature dependence of magnetization and inverse magnetic susceptibility, and for thermal properties the heat capacity and entropy are calculated for chiral HyFe and HyMn close to phase transitions using th...
Resonant Raman scattering near the free-to-bound transition in undoped p-GaSe
Hasanlı, Nızamı; Ozkan, H (Wiley, 2001-01-01)
Raman spectra of GaSe layered crystal have been measured using a He-Ne laser and temperature tuning the free-to-bound gap in the range 10-290 K. Resonance enhancement of E'((12)) mode has been observed for both incident and scattered photon energies equal to the free-to-bound transition energy.
Citation Formats
A. Ç. Erçelebi, “POLARON PROPERTIES OF THE WANNIER EXCITON IN A QUANTUM-WELL CONFINEMENT,” JOURNAL OF PHYSICS-CONDENSED MATTER, pp. 1999–2007, 1989, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39037.