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Interlayer CuO2antiferromagnetic spin correlations in Tl-based superconducting Tl2Ba2CanCun+1O6+2 nand Tl0.5Pb0.5Sr2Ca0.8Y0.2Cu2O7oxides: 63Cu and 205Tl NMR and spin-lattice relaxation data

Authors
Journal
Physica C Superconductivity
0921-4534
Publisher
Elsevier
Publication Date
Volume
183
Identifiers
DOI: 10.1016/0921-4534(91)90569-k
Disciplines
  • Physics

Abstract

Abstract We analyzed 205Tl and 63Cu spin-lattice relaxation rate data T −1 1 for thallium-based Tl 0.5Pb 0.5Sr 2Ca 0.80Y 0.2 Cu 2O 7 ( T ons c = 107 K) and Tl 2Ba 2Ca n Cu n +1O 6+1 n ( T ons c = 104 K) ( n = 1), T ons c = 125 K ( n = 2)) cuprates which contain one or two TlO layers, respectively. The difference in temperature dependences T −1 1 ( 63Cu) and T −1 1 ( 205Tl) for the one TlO layer compound gives us evidence for the presence of interlayer antiferromagnetic spin correlations between the nearest copper atoms placed in the neighbouring CuO 2 layers.

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