Exact diagonalization studies of doped Heisenberg spin rings

被引：4
|
作者：
Schnack, J [1 ]
Ouchni, F [1 ]
机构：
[1] Univ Osnabruck, Fachbereich Phys, D-49069 Osnabruck, Germany
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 290卷
关键词：
Heisenberg model; impurity effects-magnetic chains; correlated electron system; magnetization-temperature dependent; cuprates;
D O I：
10.1016/j.jmmm.2004.11.256
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
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页码：341 / 344
页数：4
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