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cond-mat.str-el2019★ 3 cited
Temperature dependence of the anomaly in the excitation spectrum of the 2D quantum Heisenberg antiferromagnet
W. Wan, N. B. Christensen, A. W. Sandvik +7
It is well established that in the low-temperature limit, the two-dimensional quantum Heisenberg antiferromagnet on a square lattice (2DQHAFSL) exhibits an anomaly in its spectrum…
cond-mat.str-el2015★ 244 cited
Fractional excitations in the square-lattice quantum antiferromagnet
B. Dalla Piazza, M. Mourigal, N. B. Christensen +7
The square-lattice quantum Heisenberg antiferromagnet displays a pronounced anomaly of unknown origin in its magnetic excitation spectrum. The anomaly manifests itself only for sho…