UniversalTcsuppression by in-plane defects in high-temperature superconductors: Implications for pairing symmetry

1996 ◽  
Vol 53 (18) ◽  
pp. 12454-12461 ◽  
Author(s):  
Sergey K. Tolpygo ◽  
J.-Y. Lin ◽  
Michael Gurvitch ◽  
S. Y. Hou ◽  
Julia M. Phillips
Keyword(s):  
High Temperature ◽  
High Temperature Superconductors ◽  
Pairing Symmetry

Superconducting gap anisotropy and d-wave pairing in YBa2Cu3O7−δ

2018 ◽  
Vol 32 (04) ◽  
pp. 1850035 ◽  
Author(s):  
Sanjeev K. Verma ◽  
Anushri Gupta ◽  
Anita Kumari ◽  
B. D. Indu
Keyword(s):  
High Temperature ◽  
Quantum Dynamics ◽  
High Temperature Superconductors ◽  
Nodal Point ◽  
Frequency Dispersion ◽  
Pairing Symmetry ◽  
Superconducting Gap ◽  
Phonon Field ◽  
Many Body Quantum Dynamics ◽  
The Many

Considering Born–Mayer–Huggins potential as a most suitable potential to study the dynamical properties of high-temperature superconductors (HTS), the many-body quantum dynamics to obtain phonon Green’s functions has been developed via a Hamiltonian that incorporates the contributions of harmonic electron and phonon fields, phonon field anharmonicities, defects and electron–phonon interactions without considering BCS structure. This enables one to develop the quasiparticle renormalized frequency dispersion in the representative high-temperature cuprate superconductor YBa2Cu3O[Formula: see text]. The superconducting gap shows substantial changes with increased doping. The in-plane gap study revealed a [Formula: see text]-shape gap with a nodal point along [Formula: see text] direction for optimum doping ([Formula: see text] = 0.16) and the nodal point vanished in underdoped and overdoped regimes. The d[Formula: see text] pairing symmetry is observed at optimum doping with the presence of s or d[Formula: see text] components ([Formula: see text] 3%) in underdoped and overdoped regimes.

scholarly journals Robust d -wave pairing symmetry in multiorbital cobalt high-temperature superconductors

2017 ◽  
Vol 96 (2) ◽  
Author(s):  
Yinxiang Li ◽  
Xinloong Han ◽  
Shengshan Qin ◽  
Congcong Le ◽  
Qiang-Hua Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Superconductors ◽  
Pairing Symmetry ◽  
Wave Pairing ◽  
D Wave
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