Pairing via Index theorem

Abstract

This work is motivated by a specific point of view: at short distances and high energies the undoped and underdoped cuprates resemble the $\pi$-flux phase of the t-J model. The purpose of this paper is to present a mechanism by which pairing grows out of the doped $\pi$-flux phase. According to this mechanism pairing symmetry is determined by a parameter controlling the quantum tunneling of gauge flux quanta. For zero tunneling the symmetry is $d_{x^2-y^2}+i{d}_{xy}$, while for large tunneling it is $d_{x^2-y^2}$. A zero-temperature critical point separates these two limits.

References in corpus (2)

• An SU(2) Formulation of the t-J model: Application to Underdoped Cuprates
• Theory of spin excitations in undoped and underdoped cuprates

Cited by in corpus (6)

• Doped Kagome System as Exotic Superconductor
• Topological chiral superconductivity beyond pairing in a Fermi liquid
• Zero modes and charged Skyrmions in graphene bilayer
• Conserved charges of order-parameter textures in Dirac systems
• Zero modes and index theorems for non-Hermitian Dirac fermions
• Variational Monte Carlo Optimization of Topological Chiral Superconductors