About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Solid State Communications
Paper
Wide-temperature instability in high-Tc superconductors, La1.85Ba0.15CuO4
Abstract
Ultrasonic attenuation and velocity have been measured in the high-Tc superconductor La1.85Ba0.15CuO4 at 24 MHz. On cooling, a pronounced softening of the lattice is observed, beginning above room temperature. Below 200 K, the lattice remains soft and highly attenuating, suggestive of a near-instability state over the entire range 4 K to 200 K, partial stiffening occurs, but the attenuation remains higher than at room temperature, a feature suggestive of a possible glassy state. © 1987.