Excitons. Their Properties and Uses by Donald C. Reynolds

By Donald C. Reynolds

Show description

Read Online or Download Excitons. Their Properties and Uses PDF

Similar physics books

Physico-Chemistry of Solid-Gas Interfaces

Primary common proof and theoretical instruments for the translation and version improvement of solid-gas interactions are first offered during this paintings. Chemical, actual and electrochemical facets are awarded from a phenomenological, thermodynamic and kinetic perspective. The theoretical elements of electric homes at the floor of a great also are coated to supply better accessibility for people with a physico-chemical history.

Problems for Physics Students: With Hints and Answers

This booklet is a suite of a few four hundred physics difficulties, with tricks on their options, and solutions. The physics coated encompasses all parts stories through final-year (advanced point) scholars in faculties and excessive faculties. the writer has targeting offering attention-grabbing (and to some degree strange) difficulties that are solved utilizing the actual ideas usually taught in complex college classes.

Extra info for Excitons. Their Properties and Uses

Example text

3. Note that due to the small effective reduced mass of the exciton and the large dielectric constants in the case of II-VI compounds, the radii of the exciton states will be much larger than the corresponding hydrogen state radii. Hence since spin-orbit and spin-spin coupling is proportional to r~3 and thus quite small, it is legitimate to write the magnetic field per­ turbations in the preceding Paschen-Back limit. The last three terms are the K · P term, the K · A term due to the magnetic field and the K2 term, re­ spectively.

34) to eliminate the cross terms of K · Vp, L/(ß) must satisfy the equation -^-j)um '{ε-Ε<·-Ε"-2ίΜ^υ9>·αΐ5> where EG = Ec — Ey and μ is the reduced mass of the exciton. Since the operator on the left of Eq. 35) is the hydrogenic operator, the eigenvalues have the form where v represents the quantum numbers associated with the hydrogenic problem, n is the principle quantum number, and the last term of Eq. 36) is the kinetic energy of the exciton. 2. 27 THE INTRINSIC EXCITON form γ l/ v (ß)

110) where M0 is the Hamiltonian for the exciton in the absence of an external magnetic field, and M\ and Jf q are the terms linear and quadratic in magnetic field, respectively. In the low field regime the solutions to Eq. 1 In the high field region, the solution of Eq. 112) where the Ly are the linear coefficients for the Landau-type solutions. t Chapter 4 deals with intrinsic excitons; solutions to the intermediate field regime in this chapter were obtained by a phenomenological approach. The theory of Bajaj and Aldrich has now been used to obtain solutions in this magnetic field region.

Download PDF sample

Rated 4.42 of 5 – based on 44 votes