Theory of quasi-one-dimensional electron liquids with spin-orbit coupling
Abstract
We present a model for the study of spin-orbit coupling in interacting quasi-one-dimensional electron systems (Q1DES's) and solve it exactly to find both single- and two-particle characteristics. We show that the combination of spin-orbit coupling and electron-electron interactions results in the replacement of separate spin and charge excitations with two kinds of bosonic mixed-spin-charge excitation, and a characteristic modification of the spectral function and single-particle density of states. Analysis of the two-particle characteristics indicates that as the strength of the spin-orbit coupling is increased it is likely that a Q1DES would undergo a magnetic ordering phase transition. We also study the transport properties of a Q1DES and prove, in particular, that its ballistic conductance is not renormalized by the spin-orbit interaction.
- Publication:
-
Physical Review B
- Pub Date:
- December 2000
- DOI:
- 10.1103/PhysRevB.62.16900
- Bibcode:
- 2000PhRvB..6216900M
- Keywords:
-
- 71.10.Pm;
- 71.70.Ej;
- 73.23.-b;
- Fermions in reduced dimensions;
- Spin-orbit coupling Zeeman and Stark splitting Jahn-Teller effect;
- Electronic transport in mesoscopic systems