|
| | | | |
| | | |
| Stat |
Members: 3644
Articles: 2'497'992
Articles rated: 2609
16 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Elementary electronic excitations in one-dimensional continuum and lattice systems | | D. W. Wang
; S. Das Sarma
; | | Date: |
5 Dec 2000 | | Journal: | Phys. Rev. B 65, 035103 (2002). | | Subject: | Strongly Correlated Electrons | cond-mat.str-el | | Abstract: | 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. | | Source: | arXiv, cond-mat/0101061 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser claudebot
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER