Features of the Terahertz Photoconductivity in YBa 2 Cu 3 O 7–δ  near the Superconducting Transition Temperature

A. V. Galeeva; A. E. Parafin; D. V. Masterov; S. A. Pavlov; A. L. Pankratov; S. N. Danilov; L. I. Ryabova; D. R. Khokhlov

doi:10.1134/S0021364018120068

Features of the Terahertz Photoconductivity in YBa₂Cu₃O_7–δ near the Superconducting Transition Temperature

Authors: Galeeva A.V.¹, Parafin A.E.², Masterov D.V.², Pavlov S.A.², Pankratov A.L.², Danilov S.N.³, Ryabova L.I.⁴, Khokhlov D.R.¹^,5
Affiliations:
1. Faculty of Physics
2. Institute for Physics of Microstructures
3. University of Regensburg
4. Faculty of Chemistry
5. Lebedev Physical Institute
Issue: Vol 107, No 12 (2018)
Pages: 785-788
Section: Condensed Matter
URL: https://journals.rcsi.science/0021-3640/article/view/161136
DOI: https://doi.org/10.1134/S0021364018120068
ID: 161136

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Abstract

Positive terahertz photoconductivity has been observed in underdoped high-temperature superconductors YBa₂Cu₃O_7–δ at temperatures somewhat higher than the midpoint of the superconducting transition. The amplitude of the effect is almost independent of the temperature and the power of the incident radiation if the latter exceeds a certain threshold value. The mechanisms responsible for the appearance of the effect are discussed.