Symmetry 2011, 3(4), 699-749; doi:10.3390/sym3040699
Article

d-Wave Superconductivity and s-Wave Charge Density Waves: Coexistence between Order Parameters of Different Origin and Symmetry

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Received: 26 May 2011; in revised form: 8 October 2011 / Accepted: 11 October 2011 / Published: 20 October 2011
(This article belongs to the Special Issue Symmetries of Electronic Order)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: A review of the theory describing the coexistence between d-wave superconductivity and s-wave charge-density-waves (CDWs) is presented. The CDW gapping is identified with pseudogapping observed in high-Tc oxides. According to the cuprate specificity, the analysis is carried out for the two-dimensional geometry of the Fermi surface (FS). Phase diagrams on the σ0 − α plane—here, σ0 is the ratio between the energy gaps in the parent pure CDW and superconducting states, and the quantity 2α is connected with the degree of dielectric (CDW) FS gapping—were obtained for various possible configurations of the order parameters in the momentum space. Relevant tunnel and photoemission experimental data for high-Tc oxides are compared with theoretical predictions. A brief review of the results obtained earlier for the coexistence between s-wave superconductivity and CDWs is also given.
Keywords: order parameter symmetry; superconductivity; charge-density waves; phase diagrams
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MDPI and ACS Style

Ekino, T.; Gabovich, A.M.; Li, M.S.; Pękała, M.; Szymczak, H.; Voitenko, A.I. d-Wave Superconductivity and s-Wave Charge Density Waves: Coexistence between Order Parameters of Different Origin and Symmetry. Symmetry 2011, 3, 699-749.

AMA Style

Ekino T, Gabovich AM, Li MS, Pękała M, Szymczak H, Voitenko AI. d-Wave Superconductivity and s-Wave Charge Density Waves: Coexistence between Order Parameters of Different Origin and Symmetry. Symmetry. 2011; 3(4):699-749.

Chicago/Turabian Style

Ekino, Toshikazu; Gabovich, Alexander M.; Li, Mai Suan; Pękała, Marek; Szymczak, Henryk; Voitenko, Alexander I. 2011. "d-Wave Superconductivity and s-Wave Charge Density Waves: Coexistence between Order Parameters of Different Origin and Symmetry." Symmetry 3, no. 4: 699-749.

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