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Title: Holons on a meandering stripe: Quantum numbers

Abstract

We attempt to access the regime of strong coupling between charge carriers and transverse dynamics of an isolated conducting ''stripe,'' such as those found in cuprate superconductors. A stripe is modeled as a partially doped domain wall in an antiferromagnet (AF), introduced in the context of two different models: the t-J model with strong Ising anisotropy, and the Hubbard model in the Hartree-Fock approximation. The domain walls with a given linear charge density are supported artificially by boundary conditions. In both models we find a regime of parameters where doped holes lose their spin and become holons (charge Q=1, spin S{sub 3}=0), which can move along the stripe without frustrating AF environment. One aspect in which the holons on the AF domain wall differ from those in an ordinary one-dimensional electron gas is their transverse degree of freedom: a mobile holon always resides on a transverse kink (or antikink) of the domain wall. This gives rise to two holon flavors and to a strong coupling between doped charges and transverse fluctuations of a stripe. (c) 2000 The American Physical Society.

Authors:
 [1];  [1]
  1. School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540 (United States)
Publication Date:
OSTI Identifier:
20216416
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 61; Journal Issue: 18; Other Information: PBD: 1 May 2000; Journal ID: ISSN 1098-0121
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; HIGH-TC SUPERCONDUCTORS; QUANTUM MECHANICS; COUPLING; CHARGE CARRIERS; CUPRATES; FLUCTUATIONS; HARTREE-FOCK METHOD; HOLES; HUBBARD MODEL; DOMAIN STRUCTURE; ANTIFERROMAGNETIC MATERIALS; THEORETICAL DATA

Citation Formats

Tchernyshyov, Oleg, and Pryadko, Leonid P. Holons on a meandering stripe: Quantum numbers. United States: N. p., 2000. Web. doi:10.1103/PhysRevB.61.12503.
Tchernyshyov, Oleg, & Pryadko, Leonid P. Holons on a meandering stripe: Quantum numbers. United States. doi:10.1103/PhysRevB.61.12503.
Tchernyshyov, Oleg, and Pryadko, Leonid P. Mon . "Holons on a meandering stripe: Quantum numbers". United States. doi:10.1103/PhysRevB.61.12503.
@article{osti_20216416,
title = {Holons on a meandering stripe: Quantum numbers},
author = {Tchernyshyov, Oleg and Pryadko, Leonid P.},
abstractNote = {We attempt to access the regime of strong coupling between charge carriers and transverse dynamics of an isolated conducting ''stripe,'' such as those found in cuprate superconductors. A stripe is modeled as a partially doped domain wall in an antiferromagnet (AF), introduced in the context of two different models: the t-J model with strong Ising anisotropy, and the Hubbard model in the Hartree-Fock approximation. The domain walls with a given linear charge density are supported artificially by boundary conditions. In both models we find a regime of parameters where doped holes lose their spin and become holons (charge Q=1, spin S{sub 3}=0), which can move along the stripe without frustrating AF environment. One aspect in which the holons on the AF domain wall differ from those in an ordinary one-dimensional electron gas is their transverse degree of freedom: a mobile holon always resides on a transverse kink (or antikink) of the domain wall. This gives rise to two holon flavors and to a strong coupling between doped charges and transverse fluctuations of a stripe. (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevB.61.12503},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 18,
volume = 61,
place = {United States},
year = {2000},
month = {5}
}