Unconventional quantum materials could dramatically boost the search for dark matter

An international team has identified a new class of quantum materials that could significantly improve the search for some of the lightest and most elusive proposed forms of dark matter, according to reporting originally published by Phys.org Quantum Physics. The finding points to a potential new direction for experiments seeking evidence of a substance that has so far escaped direct detection.

Dark matter is thought to account for roughly 85% of all matter in the universe. It does not appear to interact with light in the same way as ordinary matter, making it invisible to conventional astronomical observation. Its presence is instead inferred from gravitational effects, including its role in shaping galaxies and the large-scale structure of the cosmos.

For decades, physicists have pursued a range of approaches to detect dark matter directly, particularly because its underlying nature remains unknown. The newly identified quantum materials could expand the tools available for that effort, with a focus on exceptionally light dark-matter candidates that may be difficult to probe with existing methods.

Quantum materials are substances whose properties are governed by effects arising from quantum physics. In dark-matter research, improved materials could enable detectors to become more sensitive to extremely subtle signals. The international team’s work therefore highlights how advances in condensed-matter physics may support one of fundamental science’s longest-running searches.