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Spin-supersolid phase in Heisenberg chains: A characterization via matrix product states with periodic boundary conditions

Thu, 2012-03-22 06:00 - Lukas Hanschke
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Date: 
2011-04-25
Author(s): 

D. Rossini, V. Giovannetti, and R. Fazio,

Reference: 

Phys. Rev. B 83, 140411 (2011)

URL: 

http://prb.aps.org/abstract/PRB/v83/i14/e140411

By means of a variational calculation using matrix product states with periodic boundary conditions, we accurately determine the extension of the spin-supersolid phase predicted to exist in the spin-1 anisotropic Heisenberg chain. We compute both the structure factor and the superfluid stiffness and extract the critical exponents of the supersolid-to-solid phase transition.