Institute for Quantum Matter

Topological Magnetic Metal for Spintronics

A team led by Satoru Nakatsuji discovered large anomalous Hall, anomalous Nernst, and magneto-optical Kerr effects at room temperature in the antiferromagnetic metal Mn₃Sn – a first example of a magnetic Weyl metal. In collaboration with Chia-Ling Chien’s group at JHU, they also succeeded in making high-quality Mn₃Sn thin films through sputtering – an important step towards spintronics devices based on topological magnetic metals.

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Puzzling Itinerant Magnetism

Yi Li and two graduate students, Eric Bobrow and Keaton Stubis, studied itinerant ferromagnetism arising from the coherent motion of a single hole in the strong interaction regime. Using the mathematics of the 15-puzzle, they extended a well-known theorem that describes this itinerant ferromagnetism to almost every non-separable graph, including in particular every regular lattice in more than one dimension.

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Yb₂Ti₂O₇ Crystal

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Exchange Pathways

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Nd Kagome CEF Fit

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The Institute for Quantum Matter is an Energy Frontier Research Center that is realizing revolutionary quantum materials and structures where quantum effects such as entanglement and coherence find collective macroscopic manifestations. We expose, understand, and control the corresponding physical properties and explore their potential for energy-related applications.