Quantum oscillations defy expectations in this exotic material

Scientists have uncovered an unusual form of electron behavior in zirconium pentatelluride, a quantum material that can act as both an insulator and a conductor. Under temperatures near absolute zero and magnetic fields reaching 60 tesla, electrons produced quantum oscillations that continued even after conventional physics predicted they should disappear. Quantum oscillations defy expectations in this exotic material.

Quantum oscillations defy expectations in this exotic material Science News from research organizations Quantum oscillations defy expectations in this exotic material Under extreme magnetic fields, scientists discovered electrons in a topological material behaving in a way conventional theory says should not happen. Com A study published in Nature Communications revealed an unusual form of quantum oscillation in a three-dimensional topological insulator. The findings show that electrons in zirconium pentatelluride (ZrTe 5) can behave in unexpected ways when exposed to temperatures close to absolute zero and extremely powerful magnetic fields.

The research was led by scientists from the University of São Paulo (USP) in Brazil, Los Alamos National Laboratory, the University of Washington, and other U.S. The team combined electrical transport experiments performed in magnetic fields as strong as 60 tesla and at temperatures near 0.7 kelvin (-272.45 °C) with detailed theoretical calculations. "This work expands our understanding of electron transport in exotic phases of matter and suggests that topological insulators support the transport of not only electric charge, but also another fundamental degree of freedom: electron spin," says Julio Larrea Jiménez, a professor at USP’s Physics Institute (IF) and co-founder and director of the Laboratory for Quantum Matter under Extreme Conditions (LQMEC).

Larrea served as the doctoral advisor of Cauê Kaufmann Ribeiro, the study’s first author.