QUANTUM DISORDER OF AN ANTIFERROMAGNETIC SPIN MODEL ON THE SIERPIŃSKI GASKET-Reference-Cited by-同舟云学术

QUANTUM DISORDER OF AN ANTIFERROMAGNETIC SPIN MODEL ON THE SIERPIŃSKI GASKET

Published:2003-11-10 Issue:28 Volume:17 Page:5059-5063
ISSN:0217-9792
Container-title:International Journal of Modern Physics B
language:en
Short-container-title:Int. J. Mod. Phys. B

Author:

VOIGT ANDREAS¹,RICHTER JOHANNES²

Affiliation:

1. Center for Simulational Physics, Dept. of Physics and Astronomy, University of Georgia, Athens GA 30602, USA

2. Institut für Theoretische Physik, Otto-von-Guericke Universität Magdeburg, PF 4120, D-39106 Magdeburg, Germany

Abstract

We study the ground state magnetic order of the quantum antiferromagnet on the fractal Sierpiński gasket, a system with a dimension between one and two. Using exact diagonalisation we analyse the ground state and thermodynamic properties of small finite systems and calculate data like spin-spin correlations and specific heat. We find arguments that the ground state remains disordered for an XY or Ising like anisotropy in the spin exchange away from the isotropic Heisenberg point.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0217979203020636

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