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The transport properties of the bicrystalline YBCO
supercounducting thin film grain boundary deposited on SrTiO3
bicrystal substrate with misorientation angle 36.8 by laser
ablation have been investigated systematically. We have
manifested that these samples behave as a near-ideal
resistivity-shunted junction (RSJ) with the aid of analysis of
our experimental observation. For example, the temperature
dependence of resistivity can be interpreted in terms of the
model of thermal activated phase slipage (TAPS) effect. The
current-voltage characteristic for these samples with or
without microwave irradiation can also be verified as well.
Note that the exponent, n, of temperature dependence of
critical current can be deduced while n is between 1 and 2. In
particular, the regular oscillating phenomena associated with
the temperature dependence of resistivity with the application
of microwave onto the region of weak-link have been observed.
In essence, such interesting feature should be elucidated in
advence in the studies of nonlinear-nonstationary dynamics of
the Josephson effect.
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