期刊
PHYSICAL REVIEW LETTERS
卷 118, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.118.047201
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资金
- Deutsche Forschungsgemeinschaft [SFB 1143]
- Indian Association for the Cultivation of Science (IACS)
- Max Planck Institute for the Physics of Complex Systems
Quantum spin systems are by now known to exhibit a large number of different classes of spin liquid phases. By contrast, for classical Heisenberg models, only one kind of fractionalized spin liquid phase, the so-called Coulomb or U(1) spin liquid, has until recently been identified: This exhibits algebraic spin correlations and impurity moments, orphan spins, whose size is a fraction of that of the underlying microscopic degrees of freedom. Here, we present two Heisenberg models exhibiting fractionalization in combination with exponentially decaying correlations. These can be thought of as a classical continuous spin version of a Z(2) spin liquid. Our work suggests a systematic search and classification of classical spin liquids as a worthwhile endeavor.
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