Quantum Hall ferromagnet in a parabolic quantum wire

Yasuhiro Tokura
Phys. Rev. B 58, 12597 – Published 15 November 1998
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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 1/q, with q odd. Spin-singlet ground states for six electrons with filling fractions around 2512 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

Authors & Affiliations

Yasuhiro Tokura

  • Nippon Telegraph and Telephone Corporation, Basic Research Laboratories, Atsugi-shi, Kanagawa 243-0198, Japan

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Issue

Vol. 58, Iss. 19 — 15 November 1998

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