  Previous studies have revealed that solar coronal jets triggered by the
eruption of mini-filaments (MFs) conform to the famous magnetic-breakout
mechanism. In such scenario, a breakout current sheet (BCS) and a flare current
sheet (FCS) should be observed during the jets. With high spatial and temporal
resolution data from the SDO, the NVST, the RHESSI, the Wind, and the GOES, we
present observational evidence of a BCS and a FCS formation during coronal jets
driven by a MF eruption occurring in the active region NOAA 11726 on 2013 April
21. Magnetic field extrapolation show that the MF was enclosed by a fan-spine
magnetic structure. The MF was activated by flux cancellation under it, and
then slowly rose. A BCS formed when the magnetic fields wrapping the MF
squeezed to antidirectional external open fields. Simultaneously, one thin
bright jet and two bidirectional jet-like structures were observed. As the MF
erupted as a blowout jet, a FCS was formed when the two distended legs inside
the MF field came together. One end of the FCS connected the post-flare loops.
The peak temperature of BCS was calculated to be 2.5 MK. The length, width and
peak temperature of FCS was calculated to be 4.35-4.93 Mm, 1.31-1.45 Mm, and
2.5 MK, respectively. The magnetic reconnection rate associated with the FCS
was estimated to be from 0.266 to 0.333. This event also related to a type III
radio burst, indicating its influence on interplanetary space. These
observations support the scenario of the breakout model as the trigger
mechanism of coronal jets, and flux cancellation was the driver of this event.
