Abstract
The nonlinear microwave response of superconducting YBa2Cu3O7−δ thin films and crystals was studied quantitatively by measuring the third-order harmonic amplitude E3ω (ω: 35 GHz, jRF⩽3×104 A/cm2). We find E3ω to be dominated by two extrinsic effects: (1) the interaction with flux lines in weak links, leading to an increased nonlinear response at low temperatures, and (2) rf related flux line creation at film edges, yielding a high E3ω-signal close to Tc. Both effects together lead to a minimum in E3ω around 40–60 K, which makes this temperature interval interesting for rf applications. Intrinsic nonlinearities are smaller by orders of magnitude and could not be detected.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 8:49 a.m.) |
Deposited | 1 year, 7 months ago (Feb. 3, 2024, 8:44 a.m.) |
Indexed | 1 month ago (Aug. 7, 2025, 4:51 a.m.) |
Issued | 27 years, 8 months ago (Dec. 29, 1997) |
Published | 27 years, 8 months ago (Dec. 29, 1997) |
Published Print | 27 years, 8 months ago (Dec. 29, 1997) |
@article{Hampel_1997, title={Third-order nonlinear microwave response of YBa2Cu3O7−δ thin films and single crystals}, volume={71}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.120539}, DOI={10.1063/1.120539}, number={26}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Hampel, G. and Batlogg, B. and Krishana, K. and Ong, N. P. and Prusseit, W. and Kinder, H. and Anderson, A. C.}, year={1997}, month=dec, pages={3904–3906} }