A variational approach for the two-dimensional magnetopolaron

Date

1989-12-18

Author

Erçelebi, Atila
Saqqa, Bassam H.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

201
views

0
downloads

The problem of a two-dimensional magnetopolaron is investigated on the basis of a variational theory consisting of an adiabatic polaronic wavefunction combined with a perturbative correction by which it is possible to interrelate the strong and weak coupling counterparts of the coupled electron-phonon system. It is seen that the theory conveniently reproduces the desirable asymptotic limits in the different regimes of the problem. Furthermore, it is suggested that a satisfying improvement should be achieved if one adopts a suitably modified coherent phonon state operator which takes into account the fractional admixture of whether the lattice deformation tends to cover the entire Landau orbit or the mean electron position.

Subject Keywords

General material science, Condensed matter physics

URI

https://hdl.handle.net/11511/51706

Journal

Journal of Physics: Condensed Matter

DOI

https://doi.org/10.1088/0953-8984/1/50/010

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

A gauge model of amorphous solids containing defects Dereli, Tekin; Vercin, Abdullah (Informa UK Limited, 1987-11) A gauge model of amorphous solids is formulated as a theory of connection in the orthonormal-frame bundle over the body manifold with the structure group SO(3). The construction of free-energy integrals and the properties of maximally symmetric configurations are discussed.
A new empirical many-body potential energy function application to microclusters: elements in B.C.C., F.C.C., and H.C.P. structures Erkoç, Sevilay (Wiley, 1989-10-1) A new empirical many‐body potential energy function (PEF) has been proposed recently, and it has been successfully applied to microclusters of various elements. Using the new PEF the microcluster calculations are extended to several elements in b.c.c., f.c.c., and h.c.p. structures.
A variational multiscale constitutive model for nanocrystalline materials Gürses, Ercan (Elsevier BV, 2011-03-01) This paper presents a variational multi-scale constitutive model in the finite deformation regime capable of capturing the mechanical behavior of nanocrystalline (nc) fcc metals. The nc-material is modeled as a two-phase material consisting of a grain interior phase and a grain boundary effected zone (GBAZ). A rate-independent isotropic porous plasticity model is employed to describe the GBAZ, whereas a crystal-plasticity model which accounts for the transition from partial dislocation to full dislocation m...
THE GROUND-STATE DESCRIPTION OF THE OPTICAL POLARON VERSUS THE EFFECTIVE DIMENSIONALITY IN QUANTUM-WELL-TYPE SYSTEMS YILDIRIM, T; Erçelebi, Ayşe Çiğdem (IOP Publishing, 1991-03-11) Within the framework of the strong-coupling polaron theory the ground-state binding energy and the effective mass of the electron-LO phonon system is retrieved as a function of the effective dimensionality in a quantum-well confinement. The geometry we use is a three-dimensional parabolic potential box, the barrier slopes of which can be tuned so as to yield a unified characterization interpolating between the bulk, the quasi-two- and one-dimensional limits as well as the quantum-well box case.
A density functional theory study on the structures and energetics of CdmTen clusters (m + n <= 6) Pekoz, Rengin; Erkoç, Şakir (Elsevier BV, 2009-06-01) Density functional method has been used to study the structural features and energetics of CdmTen clusters (m + n <= 6). The results presented include the geometric structures, binding energies, Mulliken charges on atoms, vibrational frequencies and the corresponding non-zero infrared intensities, HOMO-LUMO energies and the frontier molecular orbital energy gaps, the most possible dissociation channels and their corresponding energies of the clusters.

Citation Formats

A. Erçelebi and B. H. Saqqa, “A variational approach for the two-dimensional magnetopolaron,” Journal of Physics: Condensed Matter, pp. 10081–10087, 1989, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/51706.