000171334 001__ 171334
000171334 005__ 20181203022530.0
000171334 0247_ $$2doi$$a10.1103/PhysRevB.83.212401
000171334 02470 $$2ISI$$a000291255600001
000171334 037__ $$aARTICLE
000171334 245__ $$aGround-state energy and spin gap of spin-1/2 Kagome-Heisenberg antiferromagnetic clusters: Large-scale exact diagonalization results
000171334 269__ $$a2011
000171334 260__ $$c2011
000171334 336__ $$aJournal Articles
000171334 520__ $$aWe present a comprehensive list of the ground-state energies and the spin gaps of finite Kagome clusters with up to 42 spins obtained using large-scale exact diagonalization techniques. This represents the current limit of this exact approach. For a fixed number of spins N, we study several cluster shapes under periodic boundary conditions in both directions resulting in a toroidal geometry. The clusters are characterized by their side length and diagonal as well as the shortest "Manhattan" diameter of the torii. A finite-size scaling analysis of the ground-state energy as well as the spin gap is then performed in terms of the shortest toroidal diameter as well as the shortest "Manhattan" diameter. The structure of the spin-spin correlations further supports the importance of short loops wrapping around the torii.
000171334 6531_ $$aLattice
000171334 6531_ $$aExcitations
000171334 6531_ $$aDisorder
000171334 6531_ $$aOrder
000171334 700__ $$aLaeuchli, Andreas M.$$uMax Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
000171334 700__ $$aSudan, Julien$$uInst Romand Rech Numer Phys Mat IRRMA, CH-1015 Lausanne, Switzerland
000171334 700__ $$aSorensen, Erik S.$$uMcMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada
000171334 773__ $$j83$$q-$$tPhysical Review B
000171334 909C0 $$0252369$$pSB$$xU10077
000171334 909CO $$ooai:infoscience.tind.io:171334$$pSB$$particle
000171334 937__ $$aEPFL-ARTICLE-171334
000171334 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000171334 980__ $$aARTICLE