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Half-skyrmion picture of single hole doped high-Tc cuprate

Accession number;05A0430928

Title;Half-skyrmion picture of single hole doped high-Tc cuprate

Author; MORINARI TAKAO (Kyoto Univ., Kyoto, Jpn)

Journal Title;YITP

Journal Code:L0911B

ISSN:

VOL.;NO.05-10;PAGE.4P(2005)

Figure&Table&Reference;FIG.1, REF.33

Pub. Country;Japan

Language;English

Abstract;The single hole doped CuO2 plane is studied by the O(3) non-linear .SIGMA. model and its CP1 representation. We have argued that, within the effective theory approaches to the S=1/2 Heisenberg antiferromagnet, the doped hole induces the half-skyrmion spin texture through the frmation of the Zhang-Rice singlet in the single hole doped system. The picture is consistent with rapid suppression of the Neel ordering by the doped holes because the half-skyrmion behaves a vortex in the condensate. The form of the excitation spectrum of the half-skyrmion is the same as that in the .PI.-flux phase.

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