A parallel-field negative magnetoresistance has been found in quench-condensed ultrathin films of amorphous bismuth in the immediate vicinity of the thickness-tuned superconductor-insulator transition. The effect appears to be a signature of quantum fluctuations of the order parameter associated with the quantum critical point.
|Original language||English (US)|
|Number of pages||4|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Dec 2004|
Bibliographical noteFunding Information:
The authors would like to thank N. Shah and A. Kaminev for useful discussions. This work was supported by the National Science Foundation Condensed Matter Physics Program under Grant No. DMR-0138209.