Quantum Phase Transition of Randomly-Diluted Heisenberg Antiferromagnet on a Square Lattice

Details Quantum Phase Transition of Randomly-Diluted Heisenberg Antiferromagnet on a Square Lattice Quantum Phase Transition of Randomly-Diluted Heisenberg Antiferromagnet on a Square Lattice

1999-05-26

arxiv.org/abs/cond-mat/9905379v1

Phys. Rev. Lett. 84, 4204 (2000)

Physics

Condensed Matter

Disordered Systems and Neural Networks

RevTeX, 4 pages including 5 EPS figures

Scientific paper

10.1103/PhysRevLett.84.4204

Ground-state magnetic properties of the diluted Heisenberg antiferromagnet on a square lattice are investigated by means of the quantum Monte Carlo method with the continuous-time loop algorithm. It is found that the critical concentration of magnetic sites is independent of the spin size S, and equal to the two-dimensional percolation threshold. However, the existence of quantum fluctuations makes the critical exponents deviate from those of the classical percolation transition. Furthermore, we found that the transition is not universal, i.e., the critical exponents significantly depend on S.

Affiliated with

Also associated with

No associations

Rating

Quantum Phase Transition of Randomly-Diluted Heisenberg Antiferromagnet on a Square Lattice 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 Phase Transition of Randomly-Diluted Heisenberg Antiferromagnet on a Square Lattice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Phase Transition of Randomly-Diluted Heisenberg Antiferromagnet on a Square Lattice will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-218854