%0 Journal Article %1 PhysRevB.104.094529 %A Timm, Carsten %A Bhattacharya, Ankita %D 2021 %I American Physical Society %J Phys. Rev. B %K a %N 9 %P 094529 %R 10.1103/PhysRevB.104.094529 %T Symmetry, nodal structure, and Bogoliubov Fermi surfaces for nonlocal pairing %U https://link.aps.org/doi/10.1103/PhysRevB.104.094529 %V 104 %X Multiband effects can lead to fundamentally different electronic behavior of solids, as exemplified by the possible emergence of Fermi surfaces of Bogoliubov quasiparticles in centrosymmetric superconductors which break time-reversal symmetry. We extend the analysis of possible pairing symmetries, the corresponding nodal structure, and the Bogoliubov Fermi surfaces in two directions: we include nonlocal pairing and we consider internal degrees of freedom other than the effective angular momentum of length j=3/2 examined so far. Since our main focus is on the Bogoliubov Fermi surfaces, we concentrate on even-parity pairing. The required symmetry analysis is illustrated for several examples, as a guide for the reader. We find that the inclusion of nonlocal pairing leads to a much larger range of possible pairing symmetries. For infinitesimal pairing strength, we find a simple yet powerful criterion for nodes in terms of a scalar product of form factors.

@article{PhysRevB.104.094529, abstract = {Multiband effects can lead to fundamentally different electronic behavior of solids, as exemplified by the possible emergence of Fermi surfaces of Bogoliubov quasiparticles in centrosymmetric superconductors which break time-reversal symmetry. We extend the analysis of possible pairing symmetries, the corresponding nodal structure, and the Bogoliubov Fermi surfaces in two directions: we include nonlocal pairing and we consider internal degrees of freedom other than the effective angular momentum of length j=3/2 examined so far. Since our main focus is on the Bogoliubov Fermi surfaces, we concentrate on even-parity pairing. The required symmetry analysis is illustrated for several examples, as a guide for the reader. We find that the inclusion of nonlocal pairing leads to a much larger range of possible pairing symmetries. For infinitesimal pairing strength, we find a simple yet powerful criterion for nodes in terms of a scalar product of form factors.}, added-at = {2021-11-08T09:43:23.000+0100}, author = {Timm, Carsten and Bhattacharya, Ankita}, biburl = {https://www.bibsonomy.org/bibtex/2775ef06a72450f91cfe779b56e4ab0d1/ctqmat}, day = 30, description = {Phys. Rev. B 104, 094529 (2021) - Symmetry, nodal structure, and Bogoliubov Fermi surfaces for nonlocal pairing}, doi = {10.1103/PhysRevB.104.094529}, interhash = {f4f1924bd7ffcba2c53ca06f4f790785}, intrahash = {775ef06a72450f91cfe779b56e4ab0d1}, journal = {Phys. Rev. B}, keywords = {a}, month = sep, number = 9, numpages = {33}, pages = 094529, publisher = {American Physical Society}, timestamp = {2023-01-16T14:49:29.000+0100}, title = {Symmetry, nodal structure, and Bogoliubov Fermi surfaces for nonlocal pairing}, url = {https://link.aps.org/doi/10.1103/PhysRevB.104.094529}, volume = 104, year = 2021 }