Pairing symmetry and topological surface state in iron-chalcogenide superconductors
ORAL
Abstract
The gap function symmetries remain an important question in the study of iron-based superconductors.
Motivated by the recent ARPES experiments, we investigate the gap function symmetries by examining the behavior of the surface Dirac cone of the iron-chalcogenide superconductors.
Whether the surface Dirac cone can be gapped when entering the superconducting state provides a constraint on the pairing symmetries, based on which possible time-reversal symmetry breaking gap functions are analyzed.
This study provides a helpful connection between the gap function symmetries and surface state topology.
Motivated by the recent ARPES experiments, we investigate the gap function symmetries by examining the behavior of the surface Dirac cone of the iron-chalcogenide superconductors.
Whether the surface Dirac cone can be gapped when entering the superconducting state provides a constraint on the pairing symmetries, based on which possible time-reversal symmetry breaking gap functions are analyzed.
This study provides a helpful connection between the gap function symmetries and surface state topology.
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Presenters
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Lun Hu
Department of Physics, University of California, San Diego, California 92093, USA, Department of Physics, University of California, San Diego
Authors
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Lun Hu
Department of Physics, University of California, San Diego, California 92093, USA, Department of Physics, University of California, San Diego
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Congjun Wu
Department of Physics, University of California, San Diego, Department of Physics, University of California, San Diego, CA 92093, USA