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The Superconducting d-wave Pairing and Antiferromagnetic Order on the Coupled Hubbard Ladders: A Quantum Monte Carlo Study.
- Source :
- Journal of Superconductivity & Novel Magnetism; Jan2023, Vol. 36 Issue 1, p83-90, 8p
- Publication Year :
- 2023
-
Abstract
- Using determinant quantum Monte Carlo algorithm, we study the superconducting d-wave pairing and antiferromagnetic order on the coupled Hubbard ladders. With the presence of the next-nearest-neighbor hopping t ′ = - 0.25 , we find that, when the hopping strength among ladders decreases, the d-wave pairing is firstly enhanced and then gets suppressed, showing an optimal hopping inhomogeneity for the d-wave pairing. Without the next-nearest-neighbor hopping, however, the d-wave pairing is suppressed monotonically, i.e., no optimal inhomogeneity exists. We also measure the antiferromagnetic structure factor, which also presents an optimal inhomogeneity with the next-nearest-neighbor hopping t ′ = - 0.25 , and no such optimal inhomogeneity when t ′ = 0.0 . The effect of different temperature, interaction strength, electron density, and lattice size is carefully studied and discussed. [ABSTRACT FROM AUTHOR]
- Subjects :
- ELECTRON density
MONTE Carlo method
Subjects
Details
- Language :
- English
- ISSN :
- 15571939
- Volume :
- 36
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Journal of Superconductivity & Novel Magnetism
- Publication Type :
- Academic Journal
- Accession number :
- 161271176
- Full Text :
- https://doi.org/10.1007/s10948-022-06446-8