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Kagome superconductor breaks the rules at record-breaking temperatures

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2024-11-06 22:00:24

This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility:

Using muon spin rotation at the Swiss Muon Source SmS, researchers at the Paul Scherrer Institute (PSI) have discovered that a quantum phenomenon known as time-reversal symmetry breaking occurs at the surface of the Kagome superconductor RbV3Sb5 at temperatures as high as 175 K. This sets a new record for the temperature at which time-reversal symmetry breaking is observed among Kagome systems.

Yes, you read that right: 175 K, or -98 degrees Celsius. In the quantum world, this is actually quite hot. In the bulk of the material RbV3Sb5, time-reversal symmetry breaking sets in at a much lower temperature, i.e., 60 K, or -213 degrees Celsius.

Time-reversal symmetry breaking (TRS-breaking) is a hallmark of unusual electronic and magnetic behavior that can lead to exotic quantum phases: phenomena that could potentially be very useful for quantum technologies. So, finding this at a more "manageable" temperature is exciting.

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