FIZIKA A 8 (1999) 3 , 147-156

ON DISSIPATION MECHANISM IN THE INTRINSIC JOSEPHSON EFFECT IN LAYERED SUPERCONDUCTORS WITH COHERENT INTERLAYER TUNNELLING

S. N. ARTEMENKO

Institute for Radioengineering and Electronics of the Russian Academy of Sciences, Moscow 103907, Russia

Dedicated to Professor Boran Leontić on the occasion of his 70^th birthday

Received 22 November 1999; Accepted 21 February 2000

The mechanism of conductivityin the regime of the intrinsic Josephson effect is studied in layered superconductors with singlet d-wave pairing. The cases of coherent and incoherent interlayer tunneling of electrons are considered. The theory with coherent tunnelling describes main qualitative features of the effect observed in highly anisotropic high-T_c superconductors at voltages smaller than the amplitude of the superconducting gap, the mechanism of resistivity being related to the excitations of quasiparticles via the d-wave gap. Interaction of the Josephson junctions formed by the superconducting layers due to the charging effects is shown to be small.

PACS numbers: 74.50.+r, 74.25.Fy, 74.80.Dm
UDC 538.945

Keywords: highly anisotropic high-T_c layered superconductors, intrinsic Josephson effect, singlet d-wave pairing, coherent and incoherent interlayer tunneling

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