Nuclear spin relaxation rate of disordered px+ipy-wave superconductors
Qiang Han, Z. D. Wang
DOI 10.1103/PhysRevB.70.184504 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Based on an effective Hamiltonian with the binary alloy disorder model defined in the triangular lattice, the impurity scattering effects on the density of states and especially on the spin-lattice relaxation rate 1∕T1 of px+ipy-wave superconductors are studied by solving numerically the Bogoliubov–de Gennes equations. In the clean limit, the coherence peak of 1∕T1 is observed as expected. More intriguingly, for strong scattering potential, the temperature dependence of 1∕T1 exhibits the two different power-law behaviors near Tc and at low temperatures, respectively, which is qualitatively consistent with the nuclear quadrupolar resonance measurement of the newly discovered superconductor NaxCoO2∙yH2O (x=0.35). We argue that the disorder effect plays an important role in the thermodynamic properties of the px+ipy-wave pairing state as indicated in this paper, as well as other superconducting states with unconventional pairing symmetries. Therefore further experimental exploration is expected to determine the actual pairing symmetry of this material.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NaxCoO2.yH2O Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Na0.35CoO2.yH2O Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Superconductivity in multiband disordered systems: A vector recursion approach
similarity 0.97Shreemoyee Ganguly et al.
Source status unknown — claims are unverified
Electronic properties of emergent topological defects in chiral p-wave superconductivity
similarity 0.97L.-F. Zhang et al.
Source status unknown — claims are unverified
Spectroscopic and optical response of odd-frequency superconductors
similarity 0.96P. O. Sukhachov & A. V. Balatsky
Source status unknown — claims are unverified
Fluctuation-induced first-order transition in p-wave superconductors
similarity 0.96Qi Li et al.
Source status unknown — claims are unverified
Edge modes, edge currents, and gauge invariance in px+ipy superfluids and superconductors
similarity 0.96Michael Stone & Rahul Roy
Source status unknown — claims are unverified
Local NMR relaxation rates T1−1 and T2−1 depending on the d-vector symmetry in the vortex state of chiral and helical p-wave superconductors
similarity 0.96Kenta K. Tanaka et al.
Source status unknown — claims are unverified