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20 Mar 2000

Volume 76, Issue 12, pp. 1489-1630

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Microwave surface resistance of HgBa2CaCu2O6+δ thin films

Roberto S. Aga, Shao-lin Yan, Yiyuan Xie, Siyuan Han, Judy Z. Wu, Quan-Xi Jia, and Chuhee Kwon

Appl. Phys. Lett. 76, 1606 (2000); http://dx.doi.org/10.1063/1.126110 (3 pages) | Cited 16 times

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Microwave surface resistance (Rs) has been measured on c-axis-oriented superconducting HgBa2CaCu2O6+δ (Hg-1212) films. A cavity perturbation method was employed using a high-Q Nb cavity cooled at 4.2 K. For the best film, an Rs as low as ∼ 0.3 mΩ was observed at 10 GHz up to ∼ 120 K on Hg-1212 films that have smooth surface morphology and high critical current density near 2 MA/cm2 at 100 K and self-field. This result suggests that Hg-1212 films are very promising for microwave applications above 100 K. © 2000 American Institute of Physics.
Show PACS
74.72.-h Cuprate superconductors
74.78.-w Superconducting films and low-dimensional structures
74.25.Sv Critical currents
73.50.Mx High-frequency effects; plasma effects
74.25.F- Transport properties
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