F. V. Komissinskii, G. A. Ovsyannikov, E. Il'ichev, Z. Ivanov, “Observation of the second harmonic in the phase dependence of a superconducting current in Nb/Au/YBCO heterojunctions”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2001, Volume 73, Issue 7,Pages <nobr>405

This article is cited in 4 papers

CONDENSED MATTER

Observation of the second harmonic in the phase dependence of a superconducting current in Nb/Au/YBCO heterojunctions

F. V. Komissinskii^ab, G. A. Ovsyannikov^a, E. Il'ichev^c, Z. Ivanov^b

^a Kotel'nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow
^b Chalmers University of Technology
^c Institute for Physical High Technology, Department of Cryoelectronics

Abstract: The second harmonic in the dependence of a superconducting current on the phase difference of superconducting wave functions of the electrodes was observed experimentally in Nb/Au/(001)YBa$_2$Cu$_3$O$_x$ heterojunctions. Possible reasons for its appearance were discussed within the framework of a mixed ($d\pm s$) symmetry order parameter of YBa$_2$Cu$_3$O$_x$.

PACS: 74.50.+r

Received: 21.02.2001
Revised: 12.03.2001