Elementary electronic excitations in one-dimensional continuum and lattice systems

Details Elementary electronic excitations in one-dimensional continuum and lattice systems Elementary electronic excitations in one-dimensional continuum and lattice systems

2001-01-05

arxiv.org/abs/cond-mat/0101061v1

Phys. Rev. B 65, 035103 (2002).

Physics

Condensed Matter

Strongly Correlated Electrons

50 pages, 22 figures, and submitted to Phys. Rev. B

Scientific paper

10.1103/PhysRevB.65.035103

We systematically investigate the mode dispersion and spectral weight of the elementary excitation spectra in one-dimensional continuum and lattice electron systems by using the RPA, the Luttinger liquid model, and the Hubbard model. Both charge and spin excitations are studied in details and compared among the theoretical models. For the lattice Hubbard model we use both Bethe-ansatz equations and Lanczos-Gagliano method to calculate dispersion and spectral weight separately. We discuss the theoretically calculated elementary excitation spectra in terms of the experimental inelastic light (Raman) scattering spectroscopy of 1D semiconductor quantum wire systems. Our results show that in the polarized (i.e. non-spin-flip) Raman scattering spectroscopy, only the 1D charge density excitations should show up with observable spectral weight with the single particle excitations (in RPA) or singlet spin excitations (in the Luttinger model and the Hubbard model) having negligible spectral weight. The depolarized (spin-flip) Raman scattering spectra manifest the spin density or the triplet spin excitations. We also provide a qualitative comparison between the continuum and the lattice 1D elementary excitation spectra.

Affiliated with

Also associated with

No associations

Rating

Elementary electronic excitations in one-dimensional continuum and lattice systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Elementary electronic excitations in one-dimensional continuum and lattice systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Elementary electronic excitations in one-dimensional continuum and lattice systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-37342