Quantum spin liquid in a kagome lattice spin-1/2 XY model with four-site exchange

Details Quantum spin liquid in a kagome lattice spin-1/2 XY model with four-site exchange Quantum spin liquid in a kagome lattice spin-1/2 XY model with four-site exchange

2011-06-03

arxiv.org/abs/1106.0761v1

Phys. Rev. B 84, 132409 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 figures

Scientific paper

10.1103/PhysRevB.84.132409

We study the ground state phase diagram of a two-dimensional kagome lattice spin-1/2 XY model (J) with a four-site ring exchange interaction (K) using quantum Monte Carlo simulations. We find that the superfluid phase, existing in the regime of small ring exchange, undergoes a direct transition to a Z_2 quantum spin liquid phase at (K/J)_c ~ 22, which is related to the phase proposed by Balents, Girvin and Fisher [Phys. Rev. B, 65 224412 (2002)]. The quantum phase transition between the superfluid and the spin liquid phase has exponents z and \nu falling in the 3D XY universality class, making it a candidate for an exotic XY* quantum critical point, mediated by the condensation of bosonic spinons.

Affiliated with

Also associated with

No associations

Rating

Quantum spin liquid in a kagome lattice spin-1/2 XY model with four-site exchange does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Quantum spin liquid in a kagome lattice spin-1/2 XY model with four-site exchange, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum spin liquid in a kagome lattice spin-1/2 XY model with four-site exchange will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-6925