Abstract
AbstractScanning tunneling microscopy and spectroscopy are presented to study the interplay between superconductivity and magnetism in a single‐layer organic d‐wave superconductor (BETS)2GaCl4 on Ag(111). Antiferromagnetic molecular chains of GaCl4 are spontaneously formed within (BETS)2GaCl4 superconducting single layer due to shortages of BETS dimers. Below transition temperature of 7 K, the superconducting order masks the antiferromagnetic order and dominates the electronic properties, showing a ubiquitous gap over the entire island with proximity effect across the island/Ag(111) interface. These features gradually decay with the rise in temperature giving way to a Kondo dip on GaCl4 chains, with additional inelastic vibronic features on (BETS)2GaCl4 stripes. The concurrent absence of these signals below Tc may be related to a renormalization process where both phonon and antiferromagnetic fluctuation exhibit a cooperative existence to mediate superconductivity in such d‐wave superconductors.
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