TY - GEN
T1 - Large oscillations of the magnetoresistance in nano-patterned La1. 84Sr0. 16CuO4 superconducting films
AU - Yeshurun, Y
AU - Sochnikov, I
AU - Shaulov, A
AU - Logvenov, G
AU - Bozovic, I
PY - 2011/8
Y1 - 2011/8
N2 - We report the results of magnetoresistance measurements in a unique network of non-interacting LSCO nano-loops 1. The network magnetoresistance exhibits oscillations with field periodicity φ0/A, where φ0= h/2e is the flux quantum and A is the area of a single loop. Remarkably, the oscillation amplitude is larger by two orders of magnitude than that expected from the Little-Parks effect. We argue that unlike the Little-Parks oscillations, which originate from periodic changes in the superconducting transition temperature, the oscillations we observe are caused by periodic changes in the interaction between thermally-excited moving vortices and the oscillating persistent current induced in the loops. Despite the enhanced amplitude of these oscillations, we have not detected oscillations with a period of h/e, as recently predicted for nanoscale loops of superconductors with d-wave symmetry, or with a period of h/4e,
AB - We report the results of magnetoresistance measurements in a unique network of non-interacting LSCO nano-loops 1. The network magnetoresistance exhibits oscillations with field periodicity φ0/A, where φ0= h/2e is the flux quantum and A is the area of a single loop. Remarkably, the oscillation amplitude is larger by two orders of magnitude than that expected from the Little-Parks effect. We argue that unlike the Little-Parks oscillations, which originate from periodic changes in the superconducting transition temperature, the oscillations we observe are caused by periodic changes in the interaction between thermally-excited moving vortices and the oscillating persistent current induced in the loops. Despite the enhanced amplitude of these oscillations, we have not detected oscillations with a period of h/e, as recently predicted for nanoscale loops of superconductors with d-wave symmetry, or with a period of h/4e,
UR - http://www.issp.ac.ru/ebooks/conf/LT26/B0674.pdf
M3 - منشور من مؤتمر
SP - 73
BT - The 26th International Conference on Low Temperature Physics
ER -