UC Irvine

We report memristor behavior in a macroscopic bulk Kondo insulator Ce 3Bi 4Pt 3 below 10 K. The ac current and voltage relation characteristic of memristors, pinched hysteresis loops which merge into a single line at high frequency, are systematically observed. A standard lock-in technique is used to probe the origin of this exotic behavior which cannot be explained solely by a static resistance drop arising from joule heating. Rather the response appears to be associated with the formation of dynamic thermal impedance in the dissipative regime. © 2012 American Institute of Physics.