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Title: Role of next-nearest-neighbor hopping in the [ital t]-[ital t][prime]-[ital J] model

Abstract

A next-nearest-neighbor hopping [ital t][prime] in the [ital t]-[ital t][prime]-[ital J] model has a different sign between the hole- and electron-doped systems of high-[ital T][sub [ital c]] cuprates: [ital t][prime][lt]0 for the hole-doped system and [ital t][prime][gt]0 for the electron-doped system. We show that the sign is responsible for the remarkable difference of antiferromagnetic (AF) phases between the two systems. To reveal this and clarify the role of [ital t][prime], we examine magnetic excitations of the [ital t]-[ital t][prime]-[ital J] model by employing exact diagonalization techniques for 4[times]4 and [radical]18 [times] [radical]18 lattices. In the low-doping region (two-hole case of the [radical]18 [times] [radical]18 lattice), AF spin correlations are stabilized for the case of [ital t][prime][gt]0, i.e., electron-doping case, but not for the case of [ital t][prime][lt]0. In the high-doping region (four-hole case of the 4[times]4 lattice and more) magnetic excitations are mainly controlled by the geometry of the Fermi surface of the noninteracting system.

Authors:
 [1];  [2]
  1. Max-Planck-Institut fuer Physik komplexer System, Aussenstelle Stuttgart, Heisenbergstrasse 1, D-70569 Stuttgart (Germany)
  2. Department of Applied Physics, Nagoya University, Nagoya 464-01 (Japan)
Publication Date:
OSTI Identifier:
5222490
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter; (United States)
Additional Journal Information:
Journal Volume: 49:5; Journal ID: ISSN 0163-1829
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTAL MODELS; COLLECTIVE EXCITATIONS; HIGH-TC SUPERCONDUCTORS; MAGNETIC PROPERTIES; ELECTRONIC STRUCTURE; FERMI LEVEL; INTERACTION RANGE; DISTANCE; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; EXCITATION; MATHEMATICAL MODELS; PHYSICAL PROPERTIES; SUPERCONDUCTORS; 665411* - Basic Superconductivity Studies- (1992-)

Citation Formats

Tohyama, T, and Maekawa, S. Role of next-nearest-neighbor hopping in the [ital t]-[ital t][prime]-[ital J] model. United States: N. p., 1994. Web. doi:10.1103/PhysRevB.49.3596.
Tohyama, T, & Maekawa, S. Role of next-nearest-neighbor hopping in the [ital t]-[ital t][prime]-[ital J] model. United States. https://doi.org/10.1103/PhysRevB.49.3596
Tohyama, T, and Maekawa, S. Tue . "Role of next-nearest-neighbor hopping in the [ital t]-[ital t][prime]-[ital J] model". United States. https://doi.org/10.1103/PhysRevB.49.3596.
@article{osti_5222490,
title = {Role of next-nearest-neighbor hopping in the [ital t]-[ital t][prime]-[ital J] model},
author = {Tohyama, T and Maekawa, S},
abstractNote = {A next-nearest-neighbor hopping [ital t][prime] in the [ital t]-[ital t][prime]-[ital J] model has a different sign between the hole- and electron-doped systems of high-[ital T][sub [ital c]] cuprates: [ital t][prime][lt]0 for the hole-doped system and [ital t][prime][gt]0 for the electron-doped system. We show that the sign is responsible for the remarkable difference of antiferromagnetic (AF) phases between the two systems. To reveal this and clarify the role of [ital t][prime], we examine magnetic excitations of the [ital t]-[ital t][prime]-[ital J] model by employing exact diagonalization techniques for 4[times]4 and [radical]18 [times] [radical]18 lattices. In the low-doping region (two-hole case of the [radical]18 [times] [radical]18 lattice), AF spin correlations are stabilized for the case of [ital t][prime][gt]0, i.e., electron-doping case, but not for the case of [ital t][prime][lt]0. In the high-doping region (four-hole case of the 4[times]4 lattice and more) magnetic excitations are mainly controlled by the geometry of the Fermi surface of the noninteracting system.},
doi = {10.1103/PhysRevB.49.3596},
url = {https://www.osti.gov/biblio/5222490}, journal = {Physical Review, B: Condensed Matter; (United States)},
issn = {0163-1829},
number = ,
volume = 49:5,
place = {United States},
year = {1994},
month = {2}
}