NewsPhysics

A new study has provided the first direct evidence of light-induced phase fluctuations in cuprates, high-temperature superconducting materials. Using time-resolved angle-resolved photoemission spectroscopy (tr-ARPES), researchers observed how excitation with ultrashort light pulses can generate and control these fluctuations, which are considered crucial for understanding the mechanism of superconductivity in these compounds.

Cuprates are known for their ability to superconduct at relatively high temperatures, but the microscopic origin of this property remains one of the biggest challenges in condensed matter physics. It is hypothesized that quantum fluctuations of the superconducting order parameter phase play a fundamental role, but their direct observation and control have been elusive. This breakthrough opens a new avenue for investigating the dynamics of these fluctuations and their relationship with superconductivity.

“A new study has provided the first direct evidence of light-induced phase fluctuations in cuprates, high-temperature superconducting materials.”