Parity of the pairing bosons in a high-temperature Pb-Bi2Sr2CaCu2O8 bilayer superconductor by angle-resolved photoemission spectroscopy
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Contributors
Abstract
We report the observation of a novel effect in the bilayer Pb-Bi2Sr2CaCu2O8 (Pb-Bi2212) high-Tc superconductor by means of angle-resolved photoemission with circularly polarized excitation. Different scattering rates, determined as a function of energy separately for the bonding and antibonding copper-oxygen bands, strongly imply that the dominating scattering channel is odd with respect to layer exchange within a bilayer. This is inconsistent with a phonon-mediated scattering and favors the participation of the odd collective spin excitations in the scattering mechanism in near-nodal regions of the k space, suggesting a magnetic nature of the pairing mediator.
Details
Original language | English |
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Article number | 067001 |
Journal | Physical review letters |
Volume | 96 |
Issue number | 6 |
Publication status | Published - 2006 |
Peer-reviewed | Yes |
Externally published | Yes |
External IDs
ORCID | /0000-0002-2438-0672/work/158767803 |
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