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Title: Strong pairing in mixed-dimensional bilayer antiferromagnetic Mott insulators
Abstract Interacting many-body systems in reduced-dimensional settings, such as ladders and few-layer systems, are characterized by enhanced quantum fluctuations. Recently, two-dimensional bilayer systems have sparked considerable interest because they can host unusual phases, including unconventional superconductivity. Here we present a theoretical proposal for realizing high-temperature pairing of fermions in a class of bilayer Hubbard models. We introduce a general and highly efficient pairing mechanism for mobile charge carriers in doped antiferromagnetic Mott insulators. The pairing is caused by the energy that one charge gains when it follows the path created by another charge. We show that this mechanism leads to the formation of highly mobile but tightly bound pairs in the case of mixed-dimensional Fermi–Hubbard bilayer systems. This setting is closely related to the Fermi–Hubbard model believed to capture the physics of copper oxides, and can be realized in currently available ultracold atom experiments.  more » « less
Award ID(s):
2116679
NSF-PAR ID:
10334112
Author(s) / Creator(s):
; ; ; ;
Date Published:
Journal Name:
Nature Physics
Volume:
18
Issue:
6
ISSN:
1745-2473
Page Range / eLocation ID:
651 to 656
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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