Abstract
The spin phase diagram of interacting electrons in a quantum wire under a high magnetic field is investigated by finite-system exact diagonalization. Various phases emerge as a function of interaction strength and aspect ratio. Stable spin-polarized states correspond to two-dimensional fractional quantum Hall states of filling fractions with odd. Spin-singlet ground states for six electrons with filling fractions around are inspected in detail, and a real-space singlet pairing state peculiar to wire systems is found for a larger aspect ratio.
- Received 26 February 1998
DOI:https://doi.org/10.1103/PhysRevB.58.12597
©1998 American Physical Society