Specific Features of the Nonlinear Microwave Response of the (Na{sub 0.3}K{sub 0.7}){sub x}Fe{sub 2 –} {sub y}Se{sub 2} Sodium–Potassium Ferroselenide-Based Multiband Superconductors

Journal Article · Thu Nov 15 00:00:00 EST 2018 · Physics of the Solid State

DOI:https://doi.org/10.1134/S1063783418110240· OSTI ID:22770930

Nozdrin, Yu. N.; El’kina, A. I.; Erin, Yu. S. ^[1]; Lyu, M.; Boltalin, A. I.; Morozov, I. V. ^[2]

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1. Institute for Physics of Microstructures, Russian Academy of Sciences (Russian Federation)
2. Moscow State University (Russian Federation)

Abstract—Temperature dependences of the third-harmonic power for the (Na{sub 0.3}K{sub 0.7}){sub x}Fe{sub 2 –} {sub y}Se{sub 2} sodium–potassium ferroselenide single crystals have been investigated by nonlinear near-field microwave microscopy. The temperature dependence of magnetic susceptibility at a frequency of 100 kHz for this compound has been measured. The experimental results suggest a double-gap structure of the (Na{sub 0.3}K{sub 0.7}){sub x}Fe{sub 2 –} {sub y}Se{sub 2} superconductor.

• OSTI ID: 22770930
• Journal Information: Physics of the Solid State, Vol. 60, Issue 11; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7834
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
IRON COMPOUNDS
MAGNETIC SUSCEPTIBILITY
MICROWAVE RADIATION
MONOCRYSTALS
NONLINEAR PROBLEMS
POTASSIUM COMPOUNDS
SELENIUM COMPOUNDS
SODIUM COMPOUNDS
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE