TY - JOUR
T1 - Observation of Quantum dissipation in the vortex state of a highly disordered superconducting thin film
AU - Ephron, D.
AU - Yazdani, A.
AU - Kapitulnik, A.
AU - Beasley, M. R.
PY - 1996
Y1 - 1996
N2 - We present transport measurements on a highly disordered, amorphous thin film superconductor that shows a crossover from activated to temperature independent resistance at low temperatures in the presence of a magnetic field. We interpret the data in terms of quantum tunneling of vortices, and find that within this interpretation the tunneling objects are not single vortices but rather dislocations and antidislocations of the vortex lattice, which nucleate quantum mechanically as unbound pairs. We note, however, that other interpretations of the data may be possible.
AB - We present transport measurements on a highly disordered, amorphous thin film superconductor that shows a crossover from activated to temperature independent resistance at low temperatures in the presence of a magnetic field. We interpret the data in terms of quantum tunneling of vortices, and find that within this interpretation the tunneling objects are not single vortices but rather dislocations and antidislocations of the vortex lattice, which nucleate quantum mechanically as unbound pairs. We note, however, that other interpretations of the data may be possible.
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U2 - 10.1103/PhysRevLett.76.1529
DO - 10.1103/PhysRevLett.76.1529
M3 - Article
C2 - 10061746
AN - SCOPUS:4243112725
SN - 0031-9007
VL - 76
SP - 1529
EP - 1532
JO - Physical review letters
JF - Physical review letters
IS - 9
ER -