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  1. 1 Acta Physica Polonica A

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  1. 1 2013

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  1. 1 Milić M.

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Theoretical Study on the Pressure Induced T_c Change in YBa_2Cu_3O_x

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Milić M.
Acta Physica Polonica A
|
2013
|
vol. 124
|
issue 4
745-749
EN
Pressure effect on the critical temperature, T_{c}, of the YBa_2Cu_3O_x superconductor was considered in the frame of a simple theoretical model which as a starting point assumes that T_{c} vs. pressure, P, dependence can be described by an inverted parabola. Available experimental results on T_{c} behavior under pressure were analyzed as a function of the zero pressure hole concentration in the superconducting CuO_2 planes, n_{h}(P = 0 GPa) = n_{h0}, for different constant values of P. Maximum T_{c} that can be achieved under pressure was estimated and discussed in relation to the n_{h0} = 1/8 doping and establishment of charge and spin order. The results obtained here were used to estimate increase of the hole concentration in the CuO_2 planes which occurs as a result of pressure induced oxygen reordering.
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