Interlayer Tunneling of Quasiparticles and Cooper Pairs in Bi-2212 Single Crystal Whiskers
Yu. I. Latyshev, V. N. Pavlenko, S. -J. Kim, T. Yamashita, L. N. Bulaevskii, M. J. Graf, A. V. Balatsky, N. Morozov, M. P. Maley
Abstract
The interlayer tunneling has been studied on high quality Bi-2212 stacks of micron to the submicron lateral size. We found that low temperature and low voltage tunneling I-V characteristics can be self-consistently described by Fermi-liquid model for a d-wave superconductor with a significant contribution from coherent interlayer tunneling. The gap and pseudogap interplay with variation of temperature and magnetic field has been extracted from the I-V characteristics. We consider also the role of charging effects for submicron stacks.
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