Electrons slow to a crawl in a strange new quantum state
Researchers at the University of Chicago have discovered that the material Fe5GeTe2 exhibits a unique quantum state where electrons move slowly while maintaining coherence. This behavior contradicts existing theoretical models and may enable new types of memory storage technologies.
Why it matters
The discovery of new quantum states in 2D materials is fundamental to developing next-generation, energy-efficient computing and memory devices.
Over the past decade, scientists have made major progress in creating two-dimensional materials with unusual quantum properties that could eventually support a new generation of technologies.
Some of these materials can become superconductors, allowing electricity to flow without energy loss, while others develop charge orders, in which electrons settle into organized patterns instead of moving freely.
Researchers at the University of Chicago Pritzker School of Molecular Engineering (UChicago PME) have now uncovered an unexpected form of behavior in one such material, Fe 5 GeTe 2 . They found that it can enter a charge-ordered state where large numbers of electrons move together extremely slowly while still maintaining quantum coherence.
The findings, published in Science Advances , came from the laboratory of Asst. Prof. Shuolong Yang. The discovery challenges existing ideas about how the material behaves and may also point toward new technological uses.
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