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Title: Determinant quantum Monte Carlo study of the enhancement of d -wave pairing by charge inhomogeneity

Abstract

Striped phases, in which spin, charge, and pairing correlations vary inhomogeneously in the CuO 2 planes, are a known experimental feature of cuprate superconductors, and are also found in a variety of numerical treatments of the two-dimensional Hubbard Hamiltonian. In this paper, we use determinant quantum Monte Carlo to show that if a stripe density pattern is imposed on the model, the d-wave pairing vertex is significantly enhanced. We attribute this enhancement to an increase in antiferromagnetic order which is caused by the appearance of more nearly half-filled regions when the doped holes are confined to the stripes. Here, we also observe a π-phase shift in the magnetic order.

Authors:
 [1];  [2];  [1];  [3]
  1. Univ. Federal do Rio de Janeiro, Rio de Janeiro RJ (Brazil)
  2. Univ. of California, Davis, CA (United States); Harbin Institute of Technology, Harbin (China)
  3. Univ. of California, Davis, CA (United States)
Publication Date:
Research Org.:
Univ. of California, Davis, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1329354
Grant/Contract Number:  
FG52-09NA29464
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 86; Journal Issue: 18; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Mondaini, Rubem, Ying, Tao, Paiva, Thereza, and Scalettar, Richard T. Determinant quantum Monte Carlo study of the enhancement of d-wave pairing by charge inhomogeneity. United States: N. p., 2012. Web. doi:10.1103/PhysRevB.86.184506.
Mondaini, Rubem, Ying, Tao, Paiva, Thereza, & Scalettar, Richard T. Determinant quantum Monte Carlo study of the enhancement of d-wave pairing by charge inhomogeneity. United States. doi:10.1103/PhysRevB.86.184506.
Mondaini, Rubem, Ying, Tao, Paiva, Thereza, and Scalettar, Richard T. Wed . "Determinant quantum Monte Carlo study of the enhancement of d-wave pairing by charge inhomogeneity". United States. doi:10.1103/PhysRevB.86.184506. https://www.osti.gov/servlets/purl/1329354.
@article{osti_1329354,
title = {Determinant quantum Monte Carlo study of the enhancement of d-wave pairing by charge inhomogeneity},
author = {Mondaini, Rubem and Ying, Tao and Paiva, Thereza and Scalettar, Richard T.},
abstractNote = {Striped phases, in which spin, charge, and pairing correlations vary inhomogeneously in the CuO2 planes, are a known experimental feature of cuprate superconductors, and are also found in a variety of numerical treatments of the two-dimensional Hubbard Hamiltonian. In this paper, we use determinant quantum Monte Carlo to show that if a stripe density pattern is imposed on the model, the d-wave pairing vertex is significantly enhanced. We attribute this enhancement to an increase in antiferromagnetic order which is caused by the appearance of more nearly half-filled regions when the doped holes are confined to the stripes. Here, we also observe a π-phase shift in the magnetic order.},
doi = {10.1103/PhysRevB.86.184506},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 18,
volume = 86,
place = {United States},
year = {2012},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 7 works
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