Electrostatic tuning of the superconductor-insulator transition in two dimensions |
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| Authors: | Parendo Kevin A Tan K H Sarwa B Bhattacharya A Eblen-Zayas M Staley N E Goldman A M |
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| Affiliation: | School of Physics and Astronomy, University of Minnesota, Minneapolis, 55455, USA. |
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| Abstract: | Superconductivity has been induced in insulating ultrathin films of amorphous bismuth using the electric field effect. The screening of the electron-electron interaction was found to increase with electron concentration in a manner correlated with the tendency towards superconductivity. This does not preclude an increase in the density of states being important in the development of superconductivity. The superconductor-insulator transition appears to belong to the universality class of the three dimensional XY model. |
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