Details
| Original language | English |
|---|---|
| Article number | 125137 |
| Journal | Physical Review B |
| Volume | 111 |
| Issue number | 12 |
| Publication status | Published - 15 Mar 2025 |
Abstract
We investigate the Emery model on several ladder-like lattices including two legs of copper d orbitals and various numbers of oxygen p orbitals. Pair binding energy, pair spatial structure, density distribution, and pairing correlation functions are calculated using the density-matrix renormalization group (DMRG). We show that a Luther-Emery phase with enhanced pairing correlations can be found for hole doping as well as for electron doping with realistic model parameters. Ladder properties depend sensitively on model parameters, the oxygen p orbitals taken into account, and boundary conditions. The pair binding energy is a more reliable quantity than correlation functions for ascertaining the occurrence of pairing in ladders. Overall, our results for two-leg Emery ladders support the possibility of superconductivity in the hole-doped 2D model. The issue is rather to determine which of the various ladder structures and model parameters are appropriate to approximate the two-dimensional cuprates.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physical Review B, Vol. 111, No. 12, 125137, 15.03.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of oxygen orbitals and boundary conditions on the pairing behavior in the Emery model for doped ladders
AU - Polat, Gökmen
AU - Jeckelmann, Eric
N1 - Publisher Copyright: © 2025 authors. Published by the American Physical Society.
PY - 2025/3/15
Y1 - 2025/3/15
N2 - We investigate the Emery model on several ladder-like lattices including two legs of copper d orbitals and various numbers of oxygen p orbitals. Pair binding energy, pair spatial structure, density distribution, and pairing correlation functions are calculated using the density-matrix renormalization group (DMRG). We show that a Luther-Emery phase with enhanced pairing correlations can be found for hole doping as well as for electron doping with realistic model parameters. Ladder properties depend sensitively on model parameters, the oxygen p orbitals taken into account, and boundary conditions. The pair binding energy is a more reliable quantity than correlation functions for ascertaining the occurrence of pairing in ladders. Overall, our results for two-leg Emery ladders support the possibility of superconductivity in the hole-doped 2D model. The issue is rather to determine which of the various ladder structures and model parameters are appropriate to approximate the two-dimensional cuprates.
AB - We investigate the Emery model on several ladder-like lattices including two legs of copper d orbitals and various numbers of oxygen p orbitals. Pair binding energy, pair spatial structure, density distribution, and pairing correlation functions are calculated using the density-matrix renormalization group (DMRG). We show that a Luther-Emery phase with enhanced pairing correlations can be found for hole doping as well as for electron doping with realistic model parameters. Ladder properties depend sensitively on model parameters, the oxygen p orbitals taken into account, and boundary conditions. The pair binding energy is a more reliable quantity than correlation functions for ascertaining the occurrence of pairing in ladders. Overall, our results for two-leg Emery ladders support the possibility of superconductivity in the hole-doped 2D model. The issue is rather to determine which of the various ladder structures and model parameters are appropriate to approximate the two-dimensional cuprates.
UR - http://www.scopus.com/inward/record.url?scp=105000519021&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.111.125137
DO - 10.1103/PhysRevB.111.125137
M3 - Article
AN - SCOPUS:105000519021
VL - 111
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 12
M1 - 125137
ER -