Bloch inductance in small-capacitance Josephson junctions

Details Bloch inductance in small-capacitance Josephson junctions Bloch inductance in small-capacitance Josephson junctions

2005-10-17

arxiv.org/abs/cond-mat/0510435v1

Phys. Rev. Lett. 96, 167001 (2006)

Physics

Condensed Matter

Superconductivity

5 pages incl. 3 figs

Scientific paper

10.1103/PhysRevLett.96.167001

We show that the electrical impedance of a small-capacitance Josephson junction includes besides the capacitive term $-i/\omega C_B$ also an inductive term $i\omega L_B$. Similar to the known Bloch capacitance $C_B(q)$, the Bloch inductance $L_B(q)$ also depends periodically on the quasicharge $q$, and its maximum value achieved at $q=e (\textrm{mod} 2e)$ always exceeds the value of the Josephson inductance of this junction $L_J(\phi)$ at fixed $\phi=0$. The effect of the Bloch inductance on the dynamics of a single junction and a one-dimensional array is described.

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