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Fractionalized excitations in the spin-liquid state of a kagome-lattice antiferromagnet

✍ Scribed by Han, Tian-Heng; Helton, Joel S.; Chu, Shaoyan; Nocera, Daniel G.; Rodriguez-Rivera, Jose A.; Broholm, Collin; Lee, Young S.


Book ID
118159405
Publisher
Nature Publishing Group
Year
2012
Tongue
English
Weight
558 KB
Volume
492
Category
Article
ISSN
0028-0836

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We study the ground state and low-lying excitations of the S ΒΌ 1 2 XXZ antiferromagnet on the kagomeΒ΄lattice at magnetization one-third of the saturation. An exponential number of non-magnetic states is found below a magnetic gap. The non-magnetic excitations also have a gap above the ground state,