| Full text | |
| Author(s): |
Suh, Han Gyeol
[1]
;
Menke, Henri
[2, 3]
;
Brydon, P. M. R.
[2, 3]
;
Timm, Carsten
[4, 5]
;
Ramires, Aline
[6, 7, 8, 9]
;
Agterberg, Daniel F.
[1]
Total Authors: 6
|
| Affiliation: | [1] Univ Wisconsin, Dept Phys, Milwaukee, WI 53201 - USA
[2] Univ Otago, Dept Phys, POB 56, Dunedin 9054 - New Zealand
[3] Univ Otago, MacDiarmid Inst Adv Mat & Nanotechnol, POB 56, Dunedin 9054 - New Zealand
[4] Tech Univ Dresden, Inst Theoret Phys, D-01062 Dresden - Germany
[5] Tech Univ Dresden, Wurzburg Dresden Cluster Excellence Ctqmat, D-01062 Dresden - Germany
[6] Paul Scherrer Inst, CH-5232 Villigen - Switzerland
[7] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden - Germany
[8] Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, SP - Brazil
[9] South Amer Inst Fundamental Res, ICTP SAIFR, Int Ctr Theoret Phys, BR-01140070 Sao Paulo, SP - Brazil
Total Affiliations: 9
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW RESEARCH; v. 2, n. 3 JUL 21 2020. |
| Web of Science Citations: | 23 |
| Abstract | |
Strontium ruthenate (Sr2RuO4) has long been thought to host a spin-triplet chiral p-wave superconducting state. However, the singletlike response observed in recent spin-susceptibility measurements casts serious doubts on this pairing state. Together with the evidence for broken time-reversal symmetry and a jump in the shear modulus c(66) at the superconducting transition temperature, the available experiments point towards an even-parity chiral superconductor with k(z)(k(x) +/- ik(y))-like E-g symmetry, which has consistently been dismissed based on the quasi-two-dimensional electronic structure of Sr2RuO4. Here, we show how the orbital degree of freedom can encode the two-component nature of the E-g order parameter, allowing for a local orbital-antisymmetric spin-triplet state that can be stabilized by on-site Hund's coupling. We find that this exotic E-g state can be energetically stable once a complete, realistic three-dimensional model is considered, within which momentum-dependent spin-orbit coupling terms are key. This state naturally gives rise to Bogoliubov Fermi surfaces. (AU) | |
| FAPESP's process: | 18/18287-8 - New theoretical tools for the understanding and optimization of emergent phases of matter in complex materials |
| Grantee: | Aline Ramires Neves de Oliveira |
| Support Opportunities: | Scholarships in Brazil - Young Researchers |