Under low constant-voltage conditions, individual tunneling barriers are shown to be completely switched off for tunneling conduction. These barriers appear to be in the current-leading dead ends or in the "singly connectedlike" junctions of the percolation backbone. The observed global effect under these conditions is a result of uncorrelated opening and closing of these barriers.
|Original language||American English|
|Journal||Physical Review Letters|
|State||Published - 13 Jun 2003|