Group-theoretical classification of superconducting states of strontium ruthenate
S.-O. Kaba, D. Sénéchal
DOI 10.1103/PhysRevB.100.214507 · 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
The possible superconducting states of strontium ruthenate (Sr2RuO4) are organized into irreducible representations of the point group D4h, with a special emphasis on nodes occurring within the superconducting gap. Our analysis covers the cases with and without spin-orbit coupling and takes into account the possibility of interorbital pairing within a three-band, tight-binding description of Sr2RuO4. No dynamical treatment if performed: We are confining ourselves to a group-theoretical analysis. We nevertheless adopt an intermediate-coupling point of view by working in the orbital basis instead of the band basis. The case of uniaxial deformations, under which the point group symmetry is reduced to D2h, is also covered. It turns out that nodal lines, in particular equatorial nodal lines, occur in most representations. We also highlight some results specific to multiorbital superconductivity. Among other things, we find that odd interorbital pairing allows us to combine singlet and triplet superconductivity within the same irreducible representation, that pure interorbital superconductivity leads to nodal surfaces and that the notion of nodes imposed by symmetry is not clearly defined.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| 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
Erratum: Group-theoretical classification of superconducting states of strontium ruthenate [Phys. Rev. B 100, 214507 (2019)]
similarity 0.96S.-O. Kaba & D. Sénéchal
Source status unknown — claims are unverified
Classification of two-dimensional topological crystalline superconductors and Majorana bound states at disclinations
similarity 0.95Wladimir A. Benalcazar et al.
Source status unknown — claims are unverified
Superconductivity in multiband disordered systems: A vector recursion approach
similarity 0.95Shreemoyee Ganguly et al.
Source status unknown — claims are unverified
Superconducting order of Sr2RuO4 from a three-dimensional microscopic model
similarity 0.95Henrik S. Røising et al.
Source status unknown — claims are unverified
Edge states and determination of pairing symmetry in superconducting Sr2RuO4
similarity 0.95K. Sengupta et al.
Source status unknown — claims are unverified
Orbital-dependent self-energy effects and consequences for the superconducting gap structure in multiorbital correlated electron systems
similarity 0.95Kristofer Björnson et al.
Source status unknown — claims are unverified