# name
Bosonic versus fermionic pairs of topological spin defects in monolayered high-Tc superconductors

# metadata.dc.description.abstract[].value
The energy associated with bosonic and fermionic pairs of topological spin defects in doped antiferromagnetic quantum spin-
1
∕
2
 square lattice is estimated within a resonating valence bond scenario, as described by a 
t
−
t
′
−
J
-like model Hamiltonian, plus a 
t
⊥
, responsible of a three-dimensional screening of the electrostatic repulsion within the bosonic pairs. For parameters appropriate for monolayered high-
T
c
 superconductors, both fermionic and bosonic pairs show 
x
2
−
y
2
symmetry. We find a critical value of doping such that the energy of the bosonic pairs goes below twice the energy of two fermionic pairs at their Fermi level. This finding could be related to the onset of high-
T
c
 superconductivity.

# metadata.dc.relation.isformatof[].value
Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.72.024530

# metadata.dc.source[].value
Articles publicats en revistes (Física de la Matèria Condensada)

# metadata.dc.title[].value
Bosonic versus fermionic pairs of topological spin defects in monolayered high-Tc superconductors