Scientists have for the first time measured the quantum geometry of electrons, marking a significant step in understanding the properties of quantum materials. Previously, quantum geometry was described only theoretically, but an international team of physicists has developed a method to investigate these properties experimentally. The research focuses on the wave function of electrons, which describes them as waves, revealing complex and non-trivial wave functions characteristic of new quantum materials.
The key tool used was angle-resolved photoemission spectroscopy. Scientists applied it to measure the geometry of the kagome metal, a structure of atoms resembling a traditional Japanese pattern. This method enabled researchers to determine the quantum geometric tensor—a fundamental quantity containing all information about the Bloch wave states. The results were published in Nature.
The quantum geometry of materials opens the door to studying unusual physical phenomena that go beyond the classical Landau theory. The research was made possible by close collaboration between theorists from South Korea and experimentalists from the United States, showcasing the importance of international cooperation in solving complex scientific challenges.
#space #science #educational #technology
