Email this article Observation of bosonic resonances in GdO1−xFxFeAs by intrinsic multiple Andreev reflection effect spectroscopy
- Authors: Kuzmichev S.A.1,2, Kuzmicheva T.E.2
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Affiliations:
- Moscow State University
- Lebedev Physical Institute
- Issue: Vol 105, No 10 (2017)
- Pages: 671-676
- Section: Condensed Matter
- URL: https://journals.rcsi.science/0021-3640/article/view/160323
- DOI: https://doi.org/10.1134/S0021364017100083
- ID: 160323
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Abstract
The current–voltage characteristics and dynamic conductance spectra of Andreev arrays in nearly optimal GdO1 − xFxFeAs superconductors with the critical temperature Tc = 46–50 K have been studied. A reproducible fine structure that accompanies large gap features and caused by boson emission during the process of multiple Andreev reflections has been observed. At T = 4.2 K, the bosonic mode energy ε0 = (12 ± 2) meV has been obtained.
About the authors
S. A. Kuzmichev
Moscow State University; Lebedev Physical Institute
Email: kute@sci.lebedev.ru
Russian Federation, Moscow, 119991; Moscow, 119991
T. E. Kuzmicheva
Lebedev Physical Institute
Author for correspondence.
Email: kute@sci.lebedev.ru
Russian Federation, Moscow, 119991
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