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The effect of pinning on self-heating triggering the Larkin-Ovchinnikov (LO)flux-flow instability (FFI) in superconducting thin films is theoreticallyinvestigated. The problem is considered relying upon the Bezuglyj-Shklovskij(BS) generalization of the LO theory, accounting for a finite heat removal fromthe quasiparticles at temperature $T^\ast$ to the bath at temperature $T_0$.The FFI critical parameters, namely the current density $j^{\ast}$, theelectric field $E^{\ast}$, the power density $P^{\ast}$, and the vortexvelocity $v^{\ast}$ are calculated and graphically analyzed as functions of themagnetic field and the pinning strength. With increasing pinning strength at afixed magnetic field value $E^{\ast}$ \emph{decreases}, $j^{\ast}$\emph{increases}, while $P^{\ast}$ and $T^{\ast}$ \emph{remain practicallyconstant}. Vortex pinning may hence be the cause for eventual discrepanciesbetween experiments on superconductors with \emph{strong pinning} and thegeneralized LO and BS results.

Pinning effects on self-heating and flux-flow instability in superconducting films near $T_{c}$