Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
71 (1997), S. 3904-3906
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
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. © 1997 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.120539
Permalink
Library |
Location |
Call Number |
Volume/Issue/Year |
Availability |