Princeton-led Team Discovers Unexpected Quantum Behavior in Kagome Lattice
Date: 2021-07-01
Source: WLA
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Princeton-led team discovers unexpected quantum behavior in kagome lattice: Experiments suggest evidence for novel patterns of electronic charge distribution in a kagome material whose handedness can be manipulated with a magnetic field.

F. Duncan Haldane, laureate of the 2016 Nobel Prize in Physics, put forward important theoretical concepts on the quantized Hall effect in 1988. 

While researchers already understand how the electron's spin can produce magnetism, these new results provide insights into the fundamental understanding of another type of quantum order, namely, orbital magnetism, which addresses whether the charge can spontaneously flow in a loop and produce magnetism dominated by extended orbital motion of electrons in a lattice of atoms. Such orbital currents can produce unusual quantum effects such as anomalous Hall effects and be a precursor to unconventional superconductivity at relatively high temperatures.