TY - JOUR
T1 - Scaling in the fan of an unconventional quantum critical point
AU - Melko, Roger G.
AU - Kaul, Ribhu K.
PY - 2008/1/8
Y1 - 2008/1/8
N2 - We present results of extensive finite-temperature quantum Monte Carlo simulations on a SU(2) symmetric S=1/2 quantum antiferromagnet with four-spin interaction. Our simulations, which are free of the sign problem and carried out on lattices containing in excess of 1.6×104 spins, indicate that the four-spin interaction destroys the Néel order at an unconventional z=1 quantum critical point, producing a valence-bond solid paramagnet. Our results are consistent with the "deconfined quantum criticality" scenario.
AB - We present results of extensive finite-temperature quantum Monte Carlo simulations on a SU(2) symmetric S=1/2 quantum antiferromagnet with four-spin interaction. Our simulations, which are free of the sign problem and carried out on lattices containing in excess of 1.6×104 spins, indicate that the four-spin interaction destroys the Néel order at an unconventional z=1 quantum critical point, producing a valence-bond solid paramagnet. Our results are consistent with the "deconfined quantum criticality" scenario.
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U2 - 10.1103/PhysRevLett.100.017203
DO - 10.1103/PhysRevLett.100.017203
M3 - Article
AN - SCOPUS:40749083214
SN - 0031-9007
VL - 100
JO - Physical Review Letters
JF - Physical Review Letters
IS - 1
M1 - 017203
ER -