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Spin-Liquid Ground State of the S = 1/2 Kagome Heisenberg Antiferromagnet

2011; American Association for the Advancement of Science; Volume: 332; Issue: 6034 Linguagem: Inglês

10.1126/science.1201080

1095-9203

Simeng Yan, David A. Huse, Steven R. White,

Topological Materials and Phenomena

We use the density matrix renormalization group to perform accurate calculations of the ground state of the nearest-neighbor quantum spin S = 1/2 Heisenberg antiferromagnet on the kagome lattice. We study this model on numerous long cylinders with circumferences up to 12 lattice spacings. Through a combination of very-low-energy and small finite-size effects, our results provide strong evidence that, for the infinite two-dimensional system, the ground state of this model is a fully gapped spin liquid.