5 papers · 1 filter
Direct observation of quantum superconducting fluctuations in an insulating groundstate
N. P. Armitage, R. Crane, G. Sambandamurthy +3
We review our recent measurements of the complex AC conductivity of thin InO_x films studied as a function of magnetic field through the nominal 2D superconductor-insulator transit…
Nanowire Acting as a Superconducting Quantum Interference Device
A. Johansson, G. Sambandamurthy, N. Jacobson +2
We present the results from an experimental study of the magneto-transport of superconducting wires of amorphous Indium-Oxide, having widths in the range 40 - 120 nm. We find that,…
Power law resistivity behavior in 2D superconductors across the magnetic-field tuned superconductor-insulator transition
G. Sambandamurthy, A. Johansson, E. Peled +3
We present the results of a systematic study of thin-films of amorphous indium-oxide near the superconductor-insulator transition. We show that the film's resistivity follows a sim…
Experimental evidence for a collective insulating state in two-dimensional superconductors
G. Sambandamurthy, L. W. Engel, A. Johansson +2
We present the results of an experimental study of the current-voltage characteristics in strong magnetic field () of disordered, superconducting, thin-films of amorphous Indium…
Superconductivity-Related Insulating Behavior
G. Sambandamurthy, L. W. Engel, A. Johansson +1
We present the results of an experimental study of superconducting, disordered, thin-films of amorphous Indium Oxide. These films can be driven from the superconducting phase to a…