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Inter-layer modified -wave superconductivity in an effectively doped spin-1 ladder.
- Source :
- New Journal of Physics; Nov2019, Vol. 21 Issue 11, p1-9, 9p
- Publication Year :
- 2019
-
Abstract
- We construct a four-leg spin-1/2 t–J type model to simulate a doped two-leg spin-1 antiferromagnetic Heisenberg ladder. Employing renormalized mean-field theory with simple Gutzwiller factors, we obtain three degenerate superconducting states with different pairing symmetry. Through improving the Gutzwiller factors, we find that the state C with inter-layer modified -wave pairing has the lowest energy in a large doping range. Besides, we use the density matrix renormalization group method to solve the model. The negative binding energy reveals the pairing tendency, and the pair–pair correlation functions exhibit a slowly decaying behavior on certain types of bonds. From the pair correlations, we confirm the inter-layer modified -wave superconducting state as the ground state of the model. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13672630
- Volume :
- 21
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- New Journal of Physics
- Publication Type :
- Academic Journal
- Accession number :
- 152287987
- Full Text :
- https://doi.org/10.1088/1367-2630/ab5603