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Theoretical study of the structural dependence of nuclear quadrupole frequencies in high-T_c superconductors
Abstract
The remarkable difference between the nuclear quadrupole frequencies v_Q of Cu(1) and Cu(2) in YBa_2Cu_3O_6 and YBa_2Cu_3O_7 is analyzed. We calculate the ionic contribution to the electric field gradients and estimate, by using experimental results for Cu_2O and La_2CuO_4, the contribution of the d valence electrons. Thus, we determine v_Q1, v_Q2, and the asymmetry parameter η for YBa_2Cu_3O_6 and YBa_2Cu_3O_7. The number of holes in dthe Cu-O planes and chains is found to be important for the different behavior of v_Q1 and v_Q2.
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Publikationen (Theoretische Physik II - Theoretische Festkörper- und Ultrakurzzeitphysik)Citation
@article{urn:nbn:de:hebis:34-2008062022141,
author={Garcia, Martin E. and Bennemann, K. H.},
title={Theoretical study of the structural dependence of nuclear quadrupole frequencies in high-T_c superconductors},
year={1989}
}
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<resource xsi:schemaLocation="http://datacite.org/schema/kernel-2.2 http://schema.datacite.org/meta/kernel-2.2/metadata.xsd"> 2008-06-20T10:53:54Z 2008-06-20T10:53:54Z 1989 1098-0121 0163-1829 0556-2805 urn:nbn:de:hebis:34-2008062022141 http://hdl.handle.net/123456789/2008062022141 415744 bytes application/pdf eng American Physical Society Urheberrechtlich geschützt https://rightsstatements.org/page/InC/1.0/ 530 Theoretical study of the structural dependence of nuclear quadrupole frequencies in high-T_c superconductors Aufsatz The remarkable difference between the nuclear quadrupole frequencies v_Q of Cu(1) and Cu(2) in YBa_2Cu_3O_6 and YBa_2Cu_3O_7 is analyzed. We calculate the ionic contribution to the electric field gradients and estimate, by using experimental results for Cu_2O and La_2CuO_4, the contribution of the d valence electrons. Thus, we determine v_Q1, v_Q2, and the asymmetry parameter η for YBa_2Cu_3O_6 and YBa_2Cu_3O_7. The number of holes in dthe Cu-O planes and chains is found to be important for the different behavior of v_Q1 and v_Q2. open access Phys. Rev. B 40, 8809 (1989) Garcia, Martin E. Bennemann, K. H. Extern </resource>
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