Theoretical Study on the Pressure Induced T_c Change in YBa_2Cu_3O_x

• Authors: M. Milić
• Languages of publication: EN

Abstracts

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.

Keywords

EN

74.62.Fj; 74.72.-h

Discipline

• 74.72.-h: Cuprate superconductors
• 74.62.Fj: Effects of pressure

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 124
• Issue: 4
• Pages: 745-749

Dates

published

2013-10

received

2013-04-24

Contributors

author

M. Milić

• Laboratory of Theoretical and Condensed Matter Physics, Institute of Nuclear Sciences "Vinča", University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia

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Identifiers

DOI

10.12693/APhysPolA.124.745