Phase Diagram (image) National Institutes of Natural Sciences Share Print E-Mail Caption Resistivity is shown by colors. The insulator region (red) is surrounded by the superconducting regions (blue). The shapes of the insulating and superconducting regions differ between the negative and positive ranges of the gate voltage. The shape of the electron-doped superconducting region (e-SC) is found to be quite anomalous. Credit NINS/IMS Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.