Send to

Choose Destination
Phys Rev Lett. 2011 Jul 8;107(2):027001. Epub 2011 Jul 7.

Electrostatic control of the evolution from a superconducting phase to an insulating phase in ultrathin YBa₂Cu₃O(7-x) films.

Author information

School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA.

Erratum in

  • Phys Rev Lett. 2011 Jul 15;107(3):039901.


The electrical transport properties of ultrathin YBa₂Cu₃O(7-x) films have been modified using an electric double layer transistor configuration employing an ionic liquid. A clear evolution from superconductor to insulator was observed in nominally 7 unit-cell-thick films. Using a finite size scaling analysis, curves of resistance versus temperature, R(T), over the temperature range from 6 to 22 K were found to collapse onto a single scaling function, which suggests the presence of a quantum critical point. However, the scaling fails at the lowest temperatures indicating the possible presence of an additional phase between the superconducting and insulating regimes.

Supplemental Content

Full text links

Icon for American Physical Society
Loading ...
Support Center