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Electrostatic Tuning of the Superconductor-Insulator Transition in Two Dimensions

Kevin A. Parendo·K. H. Sarwa B. Tan·A. Bhattacharya·M. Eblen-Zayas·N. E. Staley·A. M. Goldman
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Abstract

Superconductivity has been induced in insulating ultra-thin films of amorphous bismuth using the electric field effect. The screening of 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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Kevin A. Parendo, K. H. Sarwa B. Tan, A. Bhattacharya, M. Eblen-Zayas, N. E. Staley, A. M. Goldman. 2005-03-17. Electrostatic Tuning of the Superconductor-Insulator Transition in Two Dimensions. https://doi.org/10.1103/physrevlett.94.197004

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