ARPES detection of superconducting gap sign in unconventional superconductors
Qiang Gao,
Jin Mo Bok,
Ping Ai
et al.
Abstract:The superconducting gap symmetry is crucial in understanding the underlying superconductivity mechanism. Angle-resolved photoemission spectroscopy (ARPES) has played a key role in determining the gap symmetry in unconventional superconductors. However, it has been considered so far that ARPES can only measure the magnitude of the superconducting gap but not its phase; the phase has to be detected by other phase-sensitive techniques. Here we propose a method to directly detect the superconducting gap sign by AR… Show more
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