Research group detects a quantum entanglement wave for the first time using real-space measurements. Triplons are tricky little things. Experimentally, they’re exceedingly difficult to observe. And even then, researchers usually conduct the tests on macroscopic materials, in which measurements ar
Artistic illustration depicts magnetic excitations of cobalt-phthalocyanine molecules, where entangled electrons propagate into triplons. Credit: Jose Lado/Aalto UniversityTriplons are tricky little things. Experimentally, they’re exceedingly difficult to observe. And even then, researchers usually conduct the tests on macroscopic materials, in which measurements are expressed as an average across the whole sample.
“These materials are very complex. They give you very exciting physics, but the most exotic ones are also challenging to find and study. So, we are trying a different approach here by building an artificial material using individual components,” says Professor Peter Liljeroth, head of the Atomic Scale physics research group at Aalto University.Quantum materials are governed by the interactions between electrons at the microscopic level.
“Using very simple molecular building blocks, we are able to engineer and probe this complex quantum magnet in a way that has never been done before, revealing phenomena not found in its independent parts,” Drost says. “While magnetic excitations in isolated atoms have long been observed using scanning tunneling spectroscopy, it has never been accomplished with propagating triplons.”
The team monitored magnetic excitations first in individual cobalt-phthalocyanine molecules and later in larger structures like molecular chains and islands. By starting with the very simple and working towards increasing complexity, the researchers hope to understand emergent behavior in quantum materials.
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Research group detects a quantum entanglement wave for the first time using real-space measurementsTriplons are tricky little things. Experimentally, they're exceedingly difficult to observe. And even then, researchers usually conduct the tests on macroscopic materials, in which measurements are expressed as an average across the whole sample.
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