Role of nextnearestneighbor hopping in the [ital t][ital t][prime][ital J] model
Abstract
A nextnearestneighbor hopping [ital t][prime] in the [ital t][ital t][prime][ital J] model has a different sign between the hole and electrondoped systems of high[ital T][sub [ital c]] cuprates: [ital t][prime][lt]0 for the holedoped system and [ital t][prime][gt]0 for the electrondoped 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 lowdoping region (twohole 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., electrondoping case, but not for the case of [ital t][prime][lt]0. In the highdoping region (fourhole 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:

 MaxPlanckInstitut fuer Physik komplexer System, Aussenstelle Stuttgart, Heisenbergstrasse 1, D70569 Stuttgart (Germany)
 Department of Applied Physics, Nagoya University, Nagoya 46401 (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 01631829
 Country of Publication:
 United States
 Language:
 English
 Subject:
 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTAL MODELS; COLLECTIVE EXCITATIONS; HIGHTC SUPERCONDUCTORS; MAGNETIC PROPERTIES; ELECTRONIC STRUCTURE; FERMI LEVEL; INTERACTION RANGE; DISTANCE; ENERGY LEVELS; ENERGYLEVEL TRANSITIONS; EXCITATION; MATHEMATICAL MODELS; PHYSICAL PROPERTIES; SUPERCONDUCTORS; 665411*  Basic Superconductivity Studies (1992)
Citation Formats
Tohyama, T, and Maekawa, S. Role of nextnearestneighbor 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 nextnearestneighbor 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 nextnearestneighbor 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 nextnearestneighbor hopping in the [ital t][ital t][prime][ital J] model},
author = {Tohyama, T and Maekawa, S},
abstractNote = {A nextnearestneighbor hopping [ital t][prime] in the [ital t][ital t][prime][ital J] model has a different sign between the hole and electrondoped systems of high[ital T][sub [ital c]] cuprates: [ital t][prime][lt]0 for the holedoped system and [ital t][prime][gt]0 for the electrondoped 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 lowdoping region (twohole 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., electrondoping case, but not for the case of [ital t][prime][lt]0. In the highdoping region (fourhole 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 = {01631829},
number = ,
volume = 49:5,
place = {United States},
year = {1994},
month = {2}
}