The interlayer tunneling has been studied on high quality Bi-2212 stacks ofmicron to the submicron lateral size. We found that low temperature and lowvoltage tunneling I-V characteristics can be self-consistently described byFermi-liquid model for a d-wave superconductor with a significant contributionfrom coherent interlayer tunneling. The gap and pseudogap interplay withvariation of temperature and magnetic field has been extracted from the I-Vcharacteristics. We consider also the role of charging effects for submicronstacks.
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