Exact diagonalization studies of doped Heisenberg spin rings
نویسنده
چکیده
Motivated bymagnetization studies of the “telephon number compound” Sr14Cu24O41 we investigate doped Heisenberg spin rings by means of complete numerical diagonalization of a Heisenberg Hamiltonian that depends parametrically on hole positions. A comparison with experimental magnetization data reveals rather accurate information about the screened electrostatic interaction between the charged holes on the ring which appears to be astonishingly strong. c © 2008 Elsevier B.V. All rights reserved. PACS: 75.10.Pq; 75.40.Cx; 75.40.Mg
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Strong Coulomb effects in hole-doped Heisenberg chains
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