Strange metals dissipate energy at a universal quantum limit across temperatures

AI Insight

This study investigates the anomalous "strange metal" phase observed in cuprate superconductors, where electrical resistivity increases linearly with temperature - a behavior not explained by conventional metallic theory. The researchers found that the charge carrier scattering rate in this phase follows a universal relationship governed by Planck's constant and Boltzmann's constant, suggesting a fundamental quantum limit to dissipation. This Planckian dissipation appears across different cuprate materials regardless of their specific chemical composition or structure.

Why it matters

Understanding the strange metal phase is crucial for explaining high-temperature superconductivity, which could lead to loss-free power transmission and more efficient electronics. The discovery of universal Planckian behavior suggests a fundamental physical principle governing quantum materials and may guide the development of room-temperature superconductors.