Polaron Effects on Superexchange Interaction: Isotope Shifts of $T_N$, $T_C$, and $T^*$ in Layered Copper Oxides

Details Polaron Effects on Superexchange Interaction: Isotope Shifts of $T_N$, $T_C$, and $T^*$ in Layered Copper Oxides Polaron Effects on Superexchange Interaction: Isotope Shifts of $T_N$, $T_C$, and $T^*$ in Layered Copper Oxides

2002-05-27

arxiv.org/abs/cond-mat/0205558v1

JETP Lett., vol. 75, No. 8, pp. 395-398 (2002) [ Translated from Pis'ma v ZhETF, vol. 75, No. 8, pp.467-470 (2002) ]

Physics

Condensed Matter

Superconductivity

4 pages, 1 figure

Scientific paper

10.1134/1.1490007

A compact expression has been obtained for the superexchange coupling of magnetic ions via intermediate anions with regard to polaron effects at both magnetic ions and intermediate anions. This expression is used to analyze the main features of the behavior of isotope shifts for temperatures of three types in layered cuprates: the Neel temperatures ($T_N$), critical temperatures of transitions to a superconducting state ($T_C$), and characteristic temperatures of the pseudogap in the normal state ($T^*$).

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