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Proximity-induced superconductivity within the insulating (Li0.84Fe0.16)OH layers in (Li0.84Fe0.16)OHFe0.98Se

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Khasanov Rustem, Zhou Huaxue, Amato Alex, Guguchia Zurab, Morenzoni Elvezio, Dong Xiaoli, Zhang Guangming, Zhao Zhongxian,
Project Interplay between the superconductivity and magnetism in cuprate and Fe-based superconductors
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Original article (peer-reviewed)

Journal PHYSICAL REVIEW B
Volume (Issue) 93(22)
Page(s) 224512
Title of proceedings PHYSICAL REVIEW B
DOI 10.1103/physrevb.93.224512

Abstract

The superconducting and magnetic properties of single crystalline (Li0.84Fe0.16)OHFe0.98Se with the transition temperature T-c similar or equal to 40 K were studied by means of muon-spin rotation (mu SR). The zero-field and field-shift mu SR experiments confirm the homogeneity of the sample and the antiferromagnetic ordering within the (Li0.84Fe0.16)OH layers below T-m similar or equal to 10 K. The temperature dependence of the in-plane component of the magnetic penetration depth (lambda(ab)) was found to be consistent with gap opening within the superconducting FeSe planes, and it is well described within either the single s-wave gap or two s-wave gaps scenario. The opening of an additional small superconducting gap within the insulating (Li1-xFex)OH layerswas detected from the temperature evolution of the out-of plane component of the magnetic penetration lambda(-2)(c)(T). The superconductivity in (Li0.84Fe0.16)OH is most probably induced by the proximity to the superconducting FeSe layers.
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