Exact diagonalization studies of doped Heisenberg spin rings

Autor(en): Schnack, J 
Ouchni, F
Stichwörter: CHAINS; correlated electron system; cuprates; DYNAMICS; Heisenberg model; impurity effects-magnetic chains; magnetization-temperature dependent; Materials Science; Materials Science, Multidisciplinary; Physics; Physics, Condensed Matter; SR14CU24O41; SUPERCONDUCTORS
Erscheinungsdatum: 2005
Herausgeber: ELSEVIER SCIENCE BV
Journal: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volumen: 290
Ausgabe: 1, SI
Startseite: 341
Seitenende: 344
Zusammenfassung: 
Motivated by magnetization studies of the ``telephone number compound'' Sr14Cu24O41 we investigate Heisenberg spin rings containing non-magnetic sites (holes) 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) 2004 Elsevier B.V. All rights reserved.
Beschreibung: 
Joint European Magnetic Symposia (JEMS 04), Dresden, GERMANY, SEP 05-10, 2004
ISSN: 03048853
DOI: 10.1016/j.jmmm.2004.11.256

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