Authors: T. Arh, B. Sana, M. Pregelj, P. Khuntia, Z. Jagličić, M. D. Le, P. K. Biswas, P. Manuel, L. Mangin-Thro, A. Ozarowski, and A. Zorko
This article presents the first realization of a quantum spin liquid on a triangular lattice with a dominant Ising antiferromagnetic exchange interaction. Researchers from the Jožef Stefan Institute, the Institute of Mathematics, Physics, and Mechanics, and research institutions from India, the UK, France, and the USA conducted an extensive experimental study demonstrating the absence of magnetic ordering and proving the presence of Ising-type spin correlations in neodymium heptatantalate at temperatures of just a few tens of millikelvin. The discovery of this so-called Ising spin liquid introduces a new type of this enigmatic quantum-entangled state of matter, which remains dynamically fluctuating down to the lowest temperatures. Beyond its scientific significance, this discovery holds potential relevance for modern quantum technologies, as spin liquids are considered one of the most promising platforms for quantum computing.
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