Voltage Distribution (IMAGE) University of Würzburg Caption A current feed is imposed on the left side of a circuit with 20 unit cells realized by an external current source. Regardless of the location of the excitation, the voltage distribution is peaked at the right edge and decreases exponentially towards the left, which confirms the localization of all states at the right boundary. Credit Chair of Theoretical Physics I / University of Wuerzburg Usage Restrictions None License Licensed content 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.