@article{WOS:000614632600008,
 abstract = {We present a theoretical model to show that the transition from an
antiferromagnetic (AFM) phase to the d(x2-y2)-wave superconductivity
occurs through a robust companion of a finite momentum pairing between
(k, up arrow) and (-k - Q, down arrow) electrons, namely a pair-density
wave (PDW) state, where Q = (pi, pi) is the AFM wavevector.
Interestingly, the spatial structure of the PDW is constrained to be a
p+ip-wave symmetry, which follows p(k) = p(-k-Q) under fermions exchange
in cuprates, dictating a spin-singlet pairing. Furthermore, the PDW
state produces a fully gapped quasiparticle spectrum which explains
recent observations of the fully gapped quasiparticle structure of
lightly doped cuprates in the hole doping side. We study the stability
of all three phases within the self-consistent mean-field theory.
Finally, we calculate the superfluid density to propose its exponential
temperature dependence as a test to the superconducting origin of this
fully gapped state, while the phase modulation of the PDW state can be
visualized by scanning probes. (c) 2020 Elsevier Inc. All rights
reserved.},
 article-number = {168251},
 author = {Das, Tanmoy},
 doi = {10.1016/j.aop.2020.168251},
 eissn = {1096-035X},
 issn = {0003-4916},
 journal = {ANNALS OF PHYSICS},
 month = {SEP},
 title = {Nodeless superconducting gap induced by odd parity pair density wave in
underdoped cuprates},
 unique-id = {WOS:000614632600008},
 volume = {420},
 year = {2020}
}