Journal
PHYSICAL REVIEW B
Volume 84, Issue 18, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.84.180513
Keywords
-
Funding
- Office of Basic Energy Sciences, US Department of Energy at Oak Ridge National Laboratory
Ask authors/readers for more resources
The bilayer Hubbard model with an intralayer hopping t and an interlayer hopping t(perpendicular to) provides an interesting testing ground for several aspects of what has been called unconventional superconductivity. One can study the type of pair structures which arise when there are multiple Fermi surfaces. One can also examine the pairing for a system in which the structure of the spin-fluctuation spectral weight can be changed. Using a dynamic cluster quantum Monte Carlo approximation, we find that near half filling, if the splitting between the bonding and antibonding bands t(perpendicular to)/t is small, the gap has B(1g) (d(x2-y2)-wave) symmetry, but when the splitting becomes larger, A(1g) ( s(+/-)-wave) pairing is favored. We also find that in the s(+/-) pairing region, the pairing is driven by interlayer spin fluctuations and that T(c) is enhanced.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available