Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2001-10-22
Physics
Condensed Matter
Strongly Correlated Electrons
LaTeX, 30 pages including embedded ps files for figures. M.S. thesis submitted at Indian Institute of Science
Scientific paper
The interest in the study of spin-Peierls phenomenon has increased with the discovery of copper germanium oxide (CuGeO_3) as an example of spin-Peierls systems. The availability of this inorganic compound as large, high quality single crystals, allow experimental measurements which aid in understanding the spin-Peierls phenomenon. This report details the numerical and analytical work done on the various magnetic phases that occur in a quasi-one-dimensional spin-Peierls system (like that of copper germanium oxide). Taking the system to be finite, the bond displacements, single particle energies, energy eigenfunctions, spin densities and phonon frequencies are calculated numerically for all possible magnetizations, which includes both the commensurate and incommensurate phases, at zero temperature. Solitons of fractional spin are found to be present in the system for appropriate magnetizations. The uniform to dimerized phase transition occurring in this system is also modelled numerically. The single particle and ground-state energies are later obtained theoretically for the uniform and dimerized phases. In addition, the lattice spin displacements are analytically modelled for a particular magnetization of the system.
No associations
LandOfFree
Commensurate and Incommensurate Phases of a Spin-Peierls System 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 Commensurate and Incommensurate Phases of a Spin-Peierls System, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Commensurate and Incommensurate Phases of a Spin-Peierls System will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-232992