%0 Journal Article %1 PhysRevResearch.4.L012017 %A Bahari, Masoud %A Zhang, Song-Bo %A Trauzettel, Björn %D 2022 %I American Physical Society %J Phys. Rev. Res. %K a %N 1 %P L012017 %R 10.1103/PhysRevResearch.4.L012017 %T Intrinsic finite-energy Cooper pairing in j=$\dfrac32$ superconductors %U https://link.aps.org/doi/10.1103/PhysRevResearch.4.L012017 %V 4 %X We show that Cooper pairing can occur intrinsically away from the Fermi surface in j=3/2 superconductors with strong spin-orbit coupling and equally curved bands in the normal state. In contrast to conventional pairing between spin-1/2 electrons, we derive that pairing can happen between interband electrons having different magnetic quantum numbers, for instance, mj=1/2 and mj=3/2. Such superconducting correlations manifest themselves by a pair of indirect gaplike structures at finite excitation energies. An observable signature of this exotic pairing is the emergence of a pair of symmetric superconducting coherence peaks in the density of states at finite energies. Moreover, the angular-momentum-resolved density of states in the presence of a perturbative Zeeman field reflects the mj composition of the Cooper pairs. We argue that such finite-energy pairing is a generic feature of j=3/2 superconductors, both in the presence and absence of inversion symmetry.

@article{PhysRevResearch.4.L012017, abstract = {We show that Cooper pairing can occur intrinsically away from the Fermi surface in j=3/2 superconductors with strong spin-orbit coupling and equally curved bands in the normal state. In contrast to conventional pairing between spin-1/2 electrons, we derive that pairing can happen between interband electrons having different magnetic quantum numbers, for instance, mj=1/2 and mj=3/2. Such superconducting correlations manifest themselves by a pair of indirect gaplike structures at finite excitation energies. An observable signature of this exotic pairing is the emergence of a pair of symmetric superconducting coherence peaks in the density of states at finite energies. Moreover, the angular-momentum-resolved density of states in the presence of a perturbative Zeeman field reflects the mj composition of the Cooper pairs. We argue that such finite-energy pairing is a generic feature of j=3/2 superconductors, both in the presence and absence of inversion symmetry.}, added-at = {2023-10-06T15:26:39.000+0200}, author = {Bahari, Masoud and Zhang, Song-Bo and Trauzettel, Björn}, biburl = {https://www.bibsonomy.org/bibtex/266e62fe137c262024127a373bc374175/ctqmat}, day = 11, description = {Phys. Rev. Research 4, L012017 (2022) - Intrinsic finite-energy Cooper pairing in $j=3/2$ superconductors}, doi = {10.1103/PhysRevResearch.4.L012017}, interhash = {35ba82392a3754ceae45efd2c18afbf1}, intrahash = {66e62fe137c262024127a373bc374175}, journal = {Phys. Rev. Res.}, keywords = {a}, month = {02}, number = 1, numpages = {6}, pages = {L012017}, publisher = {American Physical Society}, timestamp = {2023-10-19T09:12:05.000+0200}, title = {Intrinsic finite-energy Cooper pairing in j=$\mathbf{\dfrac{3}{2}}$ superconductors}, url = {https://link.aps.org/doi/10.1103/PhysRevResearch.4.L012017}, volume = 4, year = 2022 }